Update dependencies

vendor/github.com/google/nftables/expr/connlimit.go

@@ -0,0 +1,70 @@
+// Copyright 2019 Google LLC. All Rights Reserved.
+//
+// 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 expr
+
+import (
+	"encoding/binary"
+
+	"github.com/google/nftables/binaryutil"
+	"github.com/mdlayher/netlink"
+	"golang.org/x/sys/unix"
+)
+
+const (
+	// Per https://git.netfilter.org/libnftnl/tree/include/linux/netfilter/nf_tables.h?id=84d12cfacf8ddd857a09435f3d982ab6250d250c#n1167
+	NFTA_CONNLIMIT_UNSPEC = iota
+	NFTA_CONNLIMIT_COUNT
+	NFTA_CONNLIMIT_FLAGS
+	NFT_CONNLIMIT_F_INV = 1
+)
+
+// Per https://git.netfilter.org/libnftnl/tree/src/expr/connlimit.c?id=84d12cfacf8ddd857a09435f3d982ab6250d250c
+type Connlimit struct {
+	Count uint32
+	Flags uint32
+}
+
+func (e *Connlimit) marshal(fam byte) ([]byte, error) {
+	data, err := netlink.MarshalAttributes([]netlink.Attribute{
+		{Type: NFTA_CONNLIMIT_COUNT, Data: binaryutil.BigEndian.PutUint32(e.Count)},
+		{Type: NFTA_CONNLIMIT_FLAGS, Data: binaryutil.BigEndian.PutUint32(e.Flags)},
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	return netlink.MarshalAttributes([]netlink.Attribute{
+		{Type: unix.NFTA_EXPR_NAME, Data: []byte("connlimit\x00")},
+		{Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: data},
+	})
+}
+
+func (e *Connlimit) unmarshal(fam byte, data []byte) error {
+	ad, err := netlink.NewAttributeDecoder(data)
+	if err != nil {
+		return err
+	}
+
+	ad.ByteOrder = binary.BigEndian
+	for ad.Next() {
+		switch ad.Type() {
+		case NFTA_CONNLIMIT_COUNT:
+			e.Count = binaryutil.BigEndian.Uint32(ad.Bytes())
+		case NFTA_CONNLIMIT_FLAGS:
+			e.Flags = binaryutil.BigEndian.Uint32(ad.Bytes())
+		}
+	}
+	return ad.Err()
+}