Bump github.com/containernetworking/plugins from 0.8.7 to 0.9.0

Bumps [github.com/containernetworking/plugins](https://github.com/containernetworking/plugins) from 0.8.7 to 0.9.0.
- [Release notes](https://github.com/containernetworking/plugins/releases)
- [Commits](https://github.com/containernetworking/plugins/compare/v0.8.7...v0.9.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

1 files changed, 335 insertions, 0 deletions

diff --git a/vendor/github.com/vishvananda/netlink/ipset_linux.go b/vendor/github.com/vishvananda/netlink/ipset_linux.go
new file mode 100644
index 000000000..5487fc1cc
--- /dev/null
+++ b/vendor/github.com/vishvananda/netlink/ipset_linux.go
@@ -0,0 +1,335 @@
+package netlink
+
+import (
+	"log"
+	"net"
+	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
+	"golang.org/x/sys/unix"
+)
+
+// IPSetEntry is used for adding, updating, retreiving and deleting entries
+type IPSetEntry struct {
+	Comment string
+	MAC     net.HardwareAddr
+	IP      net.IP
+	Timeout *uint32
+	Packets *uint64
+	Bytes   *uint64
+
+	Replace bool // replace existing entry
+}
+
+// IPSetResult is the result of a dump request for a set
+type IPSetResult struct {
+	Nfgenmsg *nl.Nfgenmsg
+	Protocol uint8
+	Revision uint8
+	Family   uint8
+	Flags    uint8
+	SetName  string
+	TypeName string
+
+	HashSize     uint32
+	NumEntries   uint32
+	MaxElements  uint32
+	References   uint32
+	SizeInMemory uint32
+	CadtFlags    uint32
+	Timeout      *uint32
+
+	Entries []IPSetEntry
+}
+
+// IpsetCreateOptions is the options struct for creating a new ipset
+type IpsetCreateOptions struct {
+	Replace  bool // replace existing ipset
+	Timeout  *uint32
+	Counters bool
+	Comments bool
+	Skbinfo  bool
+}
+
+// IpsetProtocol returns the ipset protocol version from the kernel
+func IpsetProtocol() (uint8, error) {
+	return pkgHandle.IpsetProtocol()
+}
+
+// IpsetCreate creates a new ipset
+func IpsetCreate(setname, typename string, options IpsetCreateOptions) error {
+	return pkgHandle.IpsetCreate(setname, typename, options)
+}
+
+// IpsetDestroy destroys an existing ipset
+func IpsetDestroy(setname string) error {
+	return pkgHandle.IpsetDestroy(setname)
+}
+
+// IpsetFlush flushes an existing ipset
+func IpsetFlush(setname string) error {
+	return pkgHandle.IpsetFlush(setname)
+}
+
+// IpsetList dumps an specific ipset.
+func IpsetList(setname string) (*IPSetResult, error) {
+	return pkgHandle.IpsetList(setname)
+}
+
+// IpsetListAll dumps all ipsets.
+func IpsetListAll() ([]IPSetResult, error) {
+	return pkgHandle.IpsetListAll()
+}
+
+// IpsetAdd adds an entry to an existing ipset.
+func IpsetAdd(setname string, entry *IPSetEntry) error {
+	return pkgHandle.ipsetAddDel(nl.IPSET_CMD_ADD, setname, entry)
+}
+
+// IpsetDele deletes an entry from an existing ipset.
+func IpsetDel(setname string, entry *IPSetEntry) error {
+	return pkgHandle.ipsetAddDel(nl.IPSET_CMD_DEL, setname, entry)
+}
+
+func (h *Handle) IpsetProtocol() (uint8, error) {
+	req := h.newIpsetRequest(nl.IPSET_CMD_PROTOCOL)
+	msgs, err := req.Execute(unix.NETLINK_NETFILTER, 0)
+
+	if err != nil {
+		return 0, err
+	}
+
+	return ipsetUnserialize(msgs).Protocol, nil
+}
+
+func (h *Handle) IpsetCreate(setname, typename string, options IpsetCreateOptions) error {
+	req := h.newIpsetRequest(nl.IPSET_CMD_CREATE)
+
+	if !options.Replace {
+		req.Flags |= unix.NLM_F_EXCL
+	}
+
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_SETNAME, nl.ZeroTerminated(setname)))
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_TYPENAME, nl.ZeroTerminated(typename)))
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_REVISION, nl.Uint8Attr(0)))
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_FAMILY, nl.Uint8Attr(0)))
+
+	data := nl.NewRtAttr(nl.IPSET_ATTR_DATA|int(nl.NLA_F_NESTED), nil)
+
+	if timeout := options.Timeout; timeout != nil {
+		data.AddChild(&nl.Uint32Attribute{Type: nl.IPSET_ATTR_TIMEOUT | nl.NLA_F_NET_BYTEORDER, Value: *timeout})
+	}
+
+	var cadtFlags uint32
+
+	if options.Comments {
+		cadtFlags |= nl.IPSET_FLAG_WITH_COMMENT
+	}
+	if options.Counters {
+		cadtFlags |= nl.IPSET_FLAG_WITH_COUNTERS
+	}
+	if options.Skbinfo {
+		cadtFlags |= nl.IPSET_FLAG_WITH_SKBINFO
+	}
+
+	if cadtFlags != 0 {
+		data.AddChild(&nl.Uint32Attribute{Type: nl.IPSET_ATTR_CADT_FLAGS | nl.NLA_F_NET_BYTEORDER, Value: cadtFlags})
+	}
+
+	req.AddData(data)
+	_, err := ipsetExecute(req)
+	return err
+}
+
+func (h *Handle) IpsetDestroy(setname string) error {
+	req := h.newIpsetRequest(nl.IPSET_CMD_DESTROY)
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_SETNAME, nl.ZeroTerminated(setname)))
+	_, err := ipsetExecute(req)
+	return err
+}
+
+func (h *Handle) IpsetFlush(setname string) error {
+	req := h.newIpsetRequest(nl.IPSET_CMD_FLUSH)
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_SETNAME, nl.ZeroTerminated(setname)))
+	_, err := ipsetExecute(req)
+	return err
+}
+
+func (h *Handle) IpsetList(name string) (*IPSetResult, error) {
+	req := h.newIpsetRequest(nl.IPSET_CMD_LIST)
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_SETNAME, nl.ZeroTerminated(name)))
+
+	msgs, err := ipsetExecute(req)
+	if err != nil {
+		return nil, err
+	}
+
+	result := ipsetUnserialize(msgs)
+	return &result, nil
+}
+
+func (h *Handle) IpsetListAll() ([]IPSetResult, error) {
+	req := h.newIpsetRequest(nl.IPSET_CMD_LIST)
+
+	msgs, err := ipsetExecute(req)
+	if err != nil {
+		return nil, err
+	}
+
+	result := make([]IPSetResult, len(msgs))
+	for i, msg := range msgs {
+		result[i].unserialize(msg)
+	}
+
+	return result, nil
+}
+
+func (h *Handle) ipsetAddDel(nlCmd int, setname string, entry *IPSetEntry) error {
+	req := h.newIpsetRequest(nlCmd)
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_SETNAME, nl.ZeroTerminated(setname)))
+	data := nl.NewRtAttr(nl.IPSET_ATTR_DATA|int(nl.NLA_F_NESTED), nil)
+
+	if !entry.Replace {
+		req.Flags |= unix.NLM_F_EXCL
+	}
+
+	if entry.Timeout != nil {
+		data.AddChild(&nl.Uint32Attribute{Type: nl.IPSET_ATTR_TIMEOUT | nl.NLA_F_NET_BYTEORDER, Value: *entry.Timeout})
+	}
+	if entry.MAC != nil {
+		data.AddChild(nl.NewRtAttr(nl.IPSET_ATTR_ETHER, entry.MAC))
+	}
+
+	data.AddChild(&nl.Uint32Attribute{Type: nl.IPSET_ATTR_LINENO | nl.NLA_F_NET_BYTEORDER, Value: 0})
+	req.AddData(data)
+
+	_, err := ipsetExecute(req)
+	return err
+}
+
+func (h *Handle) newIpsetRequest(cmd int) *nl.NetlinkRequest {
+	req := h.newNetlinkRequest(cmd|(unix.NFNL_SUBSYS_IPSET<<8), nl.GetIpsetFlags(cmd))
+
+	// Add the netfilter header
+	msg := &nl.Nfgenmsg{
+		NfgenFamily: uint8(unix.AF_NETLINK),
+		Version:     nl.NFNETLINK_V0,
+		ResId:       0,
+	}
+	req.AddData(msg)
+	req.AddData(nl.NewRtAttr(nl.IPSET_ATTR_PROTOCOL, nl.Uint8Attr(nl.IPSET_PROTOCOL)))
+
+	return req
+}
+
+func ipsetExecute(req *nl.NetlinkRequest) (msgs [][]byte, err error) {
+	msgs, err = req.Execute(unix.NETLINK_NETFILTER, 0)
+
+	if err != nil {
+		if errno := int(err.(syscall.Errno)); errno >= nl.IPSET_ERR_PRIVATE {
+			err = nl.IPSetError(uintptr(errno))
+		}
+	}
+	return
+}
+
+func ipsetUnserialize(msgs [][]byte) (result IPSetResult) {
+	for _, msg := range msgs {
+		result.unserialize(msg)
+	}
+	return result
+}
+
+func (result *IPSetResult) unserialize(msg []byte) {
+	result.Nfgenmsg = nl.DeserializeNfgenmsg(msg)
+
+	for attr := range nl.ParseAttributes(msg[4:]) {
+		switch attr.Type {
+		case nl.IPSET_ATTR_PROTOCOL:
+			result.Protocol = attr.Value[0]
+		case nl.IPSET_ATTR_SETNAME:
+			result.SetName = nl.BytesToString(attr.Value)
+		case nl.IPSET_ATTR_TYPENAME:
+			result.TypeName = nl.BytesToString(attr.Value)
+		case nl.IPSET_ATTR_REVISION:
+			result.Revision = attr.Value[0]
+		case nl.IPSET_ATTR_FAMILY:
+			result.Family = attr.Value[0]
+		case nl.IPSET_ATTR_FLAGS:
+			result.Flags = attr.Value[0]
+		case nl.IPSET_ATTR_DATA | nl.NLA_F_NESTED:
+			result.parseAttrData(attr.Value)
+		case nl.IPSET_ATTR_ADT | nl.NLA_F_NESTED:
+			result.parseAttrADT(attr.Value)
+		default:
+			log.Printf("unknown ipset attribute from kernel: %+v %v", attr, attr.Type&nl.NLA_TYPE_MASK)
+		}
+	}
+}
+
+func (result *IPSetResult) parseAttrData(data []byte) {
+	for attr := range nl.ParseAttributes(data) {
+		switch attr.Type {
+		case nl.IPSET_ATTR_HASHSIZE | nl.NLA_F_NET_BYTEORDER:
+			result.HashSize = attr.Uint32()
+		case nl.IPSET_ATTR_MAXELEM | nl.NLA_F_NET_BYTEORDER:
+			result.MaxElements = attr.Uint32()
+		case nl.IPSET_ATTR_TIMEOUT | nl.NLA_F_NET_BYTEORDER:
+			val := attr.Uint32()
+			result.Timeout = &val
+		case nl.IPSET_ATTR_ELEMENTS | nl.NLA_F_NET_BYTEORDER:
+			result.NumEntries = attr.Uint32()
+		case nl.IPSET_ATTR_REFERENCES | nl.NLA_F_NET_BYTEORDER:
+			result.References = attr.Uint32()
+		case nl.IPSET_ATTR_MEMSIZE | nl.NLA_F_NET_BYTEORDER:
+			result.SizeInMemory = attr.Uint32()
+		case nl.IPSET_ATTR_CADT_FLAGS | nl.NLA_F_NET_BYTEORDER:
+			result.CadtFlags = attr.Uint32()
+		default:
+			log.Printf("unknown ipset data attribute from kernel: %+v %v", attr, attr.Type&nl.NLA_TYPE_MASK)
+		}
+	}
+}
+
+func (result *IPSetResult) parseAttrADT(data []byte) {
+	for attr := range nl.ParseAttributes(data) {
+		switch attr.Type {
+		case nl.IPSET_ATTR_DATA | nl.NLA_F_NESTED:
+			result.Entries = append(result.Entries, parseIPSetEntry(attr.Value))
+		default:
+			log.Printf("unknown ADT attribute from kernel: %+v %v", attr, attr.Type&nl.NLA_TYPE_MASK)
+		}
+	}
+}
+
+func parseIPSetEntry(data []byte) (entry IPSetEntry) {
+	for attr := range nl.ParseAttributes(data) {
+		switch attr.Type {
+		case nl.IPSET_ATTR_TIMEOUT | nl.NLA_F_NET_BYTEORDER:
+			val := attr.Uint32()
+			entry.Timeout = &val
+		case nl.IPSET_ATTR_BYTES | nl.NLA_F_NET_BYTEORDER:
+			val := attr.Uint64()
+			entry.Bytes = &val
+		case nl.IPSET_ATTR_PACKETS | nl.NLA_F_NET_BYTEORDER:
+			val := attr.Uint64()
+			entry.Packets = &val
+		case nl.IPSET_ATTR_ETHER:
+			entry.MAC = net.HardwareAddr(attr.Value)
+		case nl.IPSET_ATTR_COMMENT:
+			entry.Comment = nl.BytesToString(attr.Value)
+		case nl.IPSET_ATTR_IP | nl.NLA_F_NESTED:
+			for attr := range nl.ParseAttributes(attr.Value) {
+				switch attr.Type {
+				case nl.IPSET_ATTR_IP:
+					entry.IP = net.IP(attr.Value)
+				default:
+					log.Printf("unknown nested ADT attribute from kernel: %+v", attr)
+				}
+			}
+		default:
+			log.Printf("unknown ADT attribute from kernel: %+v", attr)
+		}
+	}
+	return
+}