libifconfig: Add function to get bridge status

The new function operates similarly to ifconfig_lagg_get_lagg_status and
likewise is accompanied by a function to free the bridge status data structure.

I have included in this patch the relocation of some strings describing STP
parameters and the PV2ID macro from ifconfig into net/if_bridgevar.h as they
are useful for consumers of libifconfig.

Reviewed by:	kp, melifaro, mmacy
Approved by:	mmacy (mentor)
MFC after:	1 week
Relnotes:	yes
Differential Revision:	https://reviews.freebsd.org/D25460

1 files changed, 3 insertions, 30 deletions

diff --git a/sbin/ifconfig/ifbridge.c b/sbin/ifconfig/ifbridge.c
index 8ccbd622dff4..f4c51632bc98 100644
--- a/sbin/ifconfig/ifbridge.c
+++ b/sbin/ifconfig/ifbridge.c
@@ -63,36 +63,9 @@ static const char rcsid[] =
 
 #include "ifconfig.h"
 
-#define PV2ID(pv, epri, eaddr)  do {		\
-		epri     = pv >> 48;		\
-		eaddr[0] = pv >> 40;		\
-		eaddr[1] = pv >> 32;		\
-		eaddr[2] = pv >> 24;		\
-		eaddr[3] = pv >> 16;		\
-		eaddr[4] = pv >> 8;		\
-		eaddr[5] = pv >> 0;		\
-} while (0)
-
-static const char *stpstates[] = {
-	"disabled",
-	"listening",
-	"learning",
-	"forwarding",
-	"blocking",
-	"discarding"
-};
-static const char *stpproto[] = {
-	"stp",
-	"-",
-	"rstp"
-};
-static const char *stproles[] = {
-	"disabled",
-	"root",
-	"designated",
-	"alternate",
-	"backup"
-};
+static const char *stpstates[] = { STP_STATES };
+static const char *stpproto[] = { STP_PROTOS };
+static const char *stproles[] = { STP_ROLES };
 
 static int
 get_val(const char *cp, u_long *valp)