net: export all fields in Interface
Fixes #1942.
R=fullung, rsc
CC=golang-dev
https://golang.org/cl/4602044
diff --git a/src/pkg/net/interface.go b/src/pkg/net/interface.go
index f622487..f6de36f 100644
--- a/src/pkg/net/interface.go
+++ b/src/pkg/net/interface.go
@@ -34,7 +34,41 @@
MTU int // maximum transmission unit
Name string // e.g., "en0", "lo0", "eth0.100"
HardwareAddr HardwareAddr // IEEE MAC-48, EUI-48 and EUI-64 form
- rawFlags int
+ Flags Flags // e.g., FlagUp, FlagLoopback, FlagMulticast
+}
+
+type Flags uint
+
+const (
+ FlagUp Flags = 1 << iota // interface is up
+ FlagBroadcast // interface supports broadcast access capability
+ FlagLoopback // interface is a loopback interface
+ FlagPointToPoint // interface belongs to a point-to-point link
+ FlagMulticast // interface supports multicast access capability
+)
+
+var flagNames = []string{
+ "up",
+ "broadcast",
+ "loopback",
+ "pointtopoint",
+ "multicast",
+}
+
+func (f Flags) String() string {
+ s := ""
+ for i, name := range flagNames {
+ if f&(1<<uint(i)) != 0 {
+ if s != "" {
+ s += "|"
+ }
+ s += name
+ }
+ }
+ if s == "" {
+ s = "0"
+ }
+ return s
}
// Addrs returns interface addresses for a specific interface.
