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l2addr.go
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/
l2addr.go
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package datapath
/*
#include <string.h>
*/
import "C"
import (
"fmt"
"net"
"unsafe"
"github.com/flomesh-io/flb/pkg/tk"
. "github.com/flomesh-io/flb/pkg/wq"
)
// DpL2AddrMod - routine to work on a ebpf l2 addr request
func DpL2AddrMod(w *L2AddrDpWorkQ) int {
var l2va *dp_l2vlan_act
skey := new(dp_smac_key)
C.memcpy(unsafe.Pointer(&skey.smac[0]), unsafe.Pointer(&w.L2Addr[0]), 6)
skey.bd = C.ushort(uint16(w.BD))
dkey := new(dp_dmac_key)
C.memcpy(unsafe.Pointer(&dkey.dmac[0]), unsafe.Pointer(&w.L2Addr[0]), 6)
dkey.bd = C.ushort(uint16(w.BD))
if w.Work == DpCreate {
sdat := new(dp_cmn_act)
sdat.act_type = DP_SET_NOP
ddat := new(dp_dmac_tact)
C.memset(unsafe.Pointer(ddat), 0, sizeof_struct_dp_dmac_tact)
if w.Tun == 0 {
l2va = (*dp_l2vlan_act)(getPtrOffset(unsafe.Pointer(ddat),
sizeof_struct_dp_cmn_act))
if w.Tagged != 0 {
ddat.ca.act_type = DP_SET_ADD_L2VLAN
l2va.vlan = C.ushort(tk.Htons(uint16(w.BD)))
l2va.oport = C.ushort(w.PortNum)
} else {
ddat.ca.act_type = DP_SET_RM_L2VLAN
l2va.vlan = C.ushort(tk.Htons(uint16(w.BD)))
l2va.oport = C.ushort(w.PortNum)
}
}
hwAddr := net.HardwareAddr(w.L2Addr[:])
sret := flb_add_map_elem(LL_DP_SMAC_MAP, unsafe.Pointer(skey), unsafe.Pointer(sdat))
if sret != 0 {
fmt.Printf("[DP] L2 SMAC %s add[NOK] error: %d\n", hwAddr.String(), sret)
return EbpfErrL2AddrAdd
}
if w.Tun == 0 {
dret := flb_add_map_elem(LL_DP_DMAC_MAP, unsafe.Pointer(dkey), unsafe.Pointer(ddat))
if dret != 0 {
fmt.Printf("[DP] L2 DMAC %s add[NOK] error: %d\n", hwAddr.String(), sret)
flb_del_map_elem(LL_DP_SMAC_MAP, unsafe.Pointer(skey))
return EbpfErrL2AddrAdd
}
}
fmt.Printf("[DP] L2 SMAC & DMAC %s add[OK]\n", hwAddr.String())
return 0
} else if w.Work == DpRemove {
flb_del_map_elem(LL_DP_SMAC_MAP, unsafe.Pointer(skey))
if w.Tun == 0 {
flb_del_map_elem(LL_DP_DMAC_MAP, unsafe.Pointer(dkey))
}
return 0
}
return EbpfErrWqUnk
}