interesting
/
nftables
mirror of https://github.com/google/nftables.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

[expr] Add SourceRegister field and modify marshal function to work with it.

This commit is contained in:
Maxime Demode 2019-10-15 18:03:13 +02:00
parent 3c7d959797
commit 71337b220c
1 changed files with 29 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

37
expr/ct.go
View File

@ -51,21 +51,42 @@ const (
// Ct defines type for NFT connection tracking
type Ct struct {
Register uint32
Key CtKey
Register uint32
SourceRegister bool
Key CtKey
}
func (e *Ct) marshal() ([]byte, error) {
data, err := netlink.MarshalAttributes([]netlink.Attribute{
{Type: unix.NFTA_CT_KEY, Data: binaryutil.BigEndian.PutUint32(uint32(e.Key))},
{Type: unix.NFTA_CT_DREG, Data: binaryutil.BigEndian.PutUint32(e.Register)},
})
regData := []byte{}
exprData, err := netlink.MarshalAttributes(
[]netlink.Attribute{
{Type: unix.NFTA_CT_KEY, Data: binaryutil.BigEndian.PutUint32(uint32(e.Key))},
},
)
if err != nil {
return nil, err
}
if e.SourceRegister {
regData, err = netlink.MarshalAttributes(
[]netlink.Attribute{
{Type: unix.NFTA_CT_SREG, Data: binaryutil.BigEndian.PutUint32(e.Register)},
},
)
} else {
regData, err = netlink.MarshalAttributes(
[]netlink.Attribute{
{Type: unix.NFTA_CT_DREG, Data: binaryutil.BigEndian.PutUint32(e.Register)},
},
)
}
if err != nil {
return nil, err
}
exprData = append(exprData, regData...)
return netlink.MarshalAttributes([]netlink.Attribute{
{Type: unix.NFTA_EXPR_NAME, Data: []byte("ct\x00")},
{Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: data},
{Type: unix.NLA_F_NESTED | unix.NFTA_EXPR_DATA, Data: exprData},
})
}
@ -78,7 +99,7 @@ func (e *Ct) unmarshal(data []byte) error {
for ad.Next() {
switch ad.Type() {
case unix.NFTA_CT_KEY:
e.Key = ad.Uint32()
e.Key = CtKey(ad.Uint32())
case unix.NFTA_CT_DREG:
e.Register = ad.Uint32()
}