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abf.go
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abf.go
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// Copyright (C) 2021 Cisco Systems Inc.
//
// 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 vpplink
import (
"fmt"
"github.com/projectcalico/vpp-dataplane/v3/vpplink/generated/bindings/abf"
"github.com/projectcalico/vpp-dataplane/v3/vpplink/generated/bindings/fib_types"
"github.com/projectcalico/vpp-dataplane/v3/vpplink/generated/bindings/interface_types"
"github.com/projectcalico/vpp-dataplane/v3/vpplink/types"
)
var (
policyIndexAllocator = NewIndexAllocator(1)
)
func (v *VppLink) attachDetachAbfPolicy(policyID uint32, swIfIndex uint32, isv6 bool, isAdd bool) error {
client := abf.NewServiceClient(v.GetConnection())
_, err := client.AbfItfAttachAddDel(v.GetContext(), &abf.AbfItfAttachAddDel{
IsAdd: isAdd,
Attach: abf.AbfItfAttach{
PolicyID: policyID,
SwIfIndex: interface_types.InterfaceIndex(swIfIndex),
IsIPv6: isv6,
},
})
if err != nil {
return err
}
return nil
}
func (v *VppLink) AttachAbfPolicy(policyID uint32, swIfIndex uint32, isv6 bool) error {
if err := v.attachDetachAbfPolicy(policyID, swIfIndex, isv6, true); err != nil {
return fmt.Errorf("failed to attach ABF Policy: %w", err)
}
return nil
}
func (v *VppLink) DetachAbfPolicy(policyID uint32, swIfIndex uint32, isv6 bool) error {
if err := v.attachDetachAbfPolicy(policyID, swIfIndex, isv6, false); err != nil {
return fmt.Errorf("failed to detach ABF Policy: %w", err)
}
return nil
}
func (v *VppLink) addDelAbfPolicy(policy *types.AbfPolicy, isAdd bool) error {
client := abf.NewServiceClient(v.GetConnection())
fibPaths := make([]fib_types.FibPath, 0, len(policy.Paths))
for _, path := range policy.Paths {
fibPaths = append(fibPaths, path.ToFibPath(false))
}
_, err := client.AbfPolicyAddDel(v.GetContext(), &abf.AbfPolicyAddDel{
IsAdd: isAdd,
Policy: abf.AbfPolicy{
PolicyID: policy.PolicyID,
ACLIndex: policy.AclIndex,
Paths: fibPaths,
},
})
if err != nil {
return err
}
return nil
}
func (v *VppLink) AddAbfPolicy(policy *types.AbfPolicy) error {
policy.PolicyID = policyIndexAllocator.AllocateIndex()
if err := v.addDelAbfPolicy(policy, true); err != nil {
return fmt.Errorf("failed to add ABF Policy: %w", err)
}
return nil
}
func (v *VppLink) DelAbfPolicy(policy *types.AbfPolicy) error {
if err := v.addDelAbfPolicy(policy, false); err != nil {
return fmt.Errorf("failed to delete ABF Policy: %w", err)
}
policyIndexAllocator.FreeIndex(policy.PolicyID)
return nil
}