BGP connection on a speecified interface (including which is associated VRF) using syscall SO_BINDTODEVICE

2 files changed, 15 insertions, 3 deletions

diff --git a/internal/pkg/config/bgp_configs.go b/internal/pkg/config/bgp_configs.go
index 37fe1b39..0e375619 100644
--- a/internal/pkg/config/bgp_configs.go
+++ b/internal/pkg/config/bgp_configs.go
@@ -2548,6 +2548,10 @@ type TransportState struct {
 	// Remote port being used by the peer for the TCP session
 	// supporting the BGP session.
 	RemotePort uint16 `mapstructure:"remote-port" json:"remote-port,omitempty"`
+	// original -> bgp:bind-interface
+	// bgp:bind-interface's original type is union.
+	// Interface name for binding.
+	BindInterface string `mapstructure:"bind-interface" json:"bind-interface,omitempty"`
 }
 
 // struct for container bgp:config.
@@ -2580,6 +2584,10 @@ type TransportConfig struct {
 	// original -> gobgp:ttl
 	// TTL value for BGP packets.
 	Ttl uint8 `mapstructure:"ttl" json:"ttl,omitempty"`
+	// original -> bgp:bind-interface
+	// bgp:bind-interface's original type is union.
+	// Interface name for binding.
+	BindInterface string `mapstructure:"bind-interface" json:"bind-interface,omitempty"`
 }
 
 func (lhs *TransportConfig) Equal(rhs *TransportConfig) bool {
@@ -2604,6 +2612,9 @@ func (lhs *TransportConfig) Equal(rhs *TransportConfig) bool {
 	if lhs.Ttl != rhs.Ttl {
 		return false
 	}
+	if lhs.BindInterface != rhs.BindInterface {
+		return false
+	}
 	return true
 }
 
diff --git a/internal/pkg/config/util.go b/internal/pkg/config/util.go
index 78a0e713..f85e9376 100644
--- a/internal/pkg/config/util.go
+++ b/internal/pkg/config/util.go
@@ -534,9 +534,10 @@ func NewPeerFromConfigStruct(pconf *Neighbor) *api.Peer {
 			LocalRestarting:     pconf.GracefulRestart.State.LocalRestarting,
 		},
 		Transport: &api.Transport{
-			RemotePort:   uint32(pconf.Transport.Config.RemotePort),
-			LocalAddress: localAddress,
-			PassiveMode:  pconf.Transport.Config.PassiveMode,
+			RemotePort:    uint32(pconf.Transport.Config.RemotePort),
+			LocalAddress:  localAddress,
+			PassiveMode:   pconf.Transport.Config.PassiveMode,
+			BindInterface: pconf.Transport.Config.BindInterface,
 		},
 		AfiSafis: afiSafis,
 	}