Address comments

* fix package import order
* use int instead of int32 for Filter FW Attrs

filter.go

@@ -52,7 +52,7 @@ type FilterFwAttrs struct {
 	Rate      uint32
 	AvRate    uint32
 	PeakRate  uint32
-	Action    int32
+	Action    int
 	Overhead  uint16
 	LinkLayer int
 }
@@ -86,7 +86,7 @@ func NewFw(attrs FilterAttrs, fattrs FilterFwAttrs) (*Fw, error) {
 		linklayer = fattrs.LinkLayer
 	}
 
-	police.Action = fattrs.Action
+	police.Action = int32(fattrs.Action)
 	if police.Rate.Rate != 0 {
 		police.Rate.Mpu = fattrs.Mpu
 		police.Rate.Overhead = fattrs.Overhead

filter_linux.go

@@ -4,8 +4,9 @@ import (
 	"bytes"
 	"encoding/binary"
 	"fmt"
-	"github.com/vishvananda/netlink/nl"
 	"syscall"
+
+	"github.com/vishvananda/netlink/nl"
 )
 
 // FilterDel will delete a filter from the system.

filter_test.go

@@ -1,9 +1,10 @@
 package netlink
 
 import (
-	"github.com/vishvananda/netlink/nl"
 	"syscall"
 	"testing"
+
+	"github.com/vishvananda/netlink/nl"
 )
 
 func TestFilterAddDel(t *testing.T) {