From 82902fa3d86ea4768ffb2851bb2f6308cddf3db3 Mon Sep 17 00:00:00 2001
From: Nick Sayer <nsayer@FreeBSD.org>
Date: Sat, 29 Jul 2000 02:00:12 +0000
Subject: [PATCH] Make the bridge_refresh operation automatic when ethernet
 interfaces are attached or detached.

---
 sys/net/bridge.c       | 7 ++++++-
 sys/net/bridge.h       | 2 ++
 sys/net/if_ethersubr.c | 6 ++++++
 3 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/sys/net/bridge.c b/sys/net/bridge.c
index 5eb86ce0e39..ec9aada88ec 100644
--- a/sys/net/bridge.c
+++ b/sys/net/bridge.c
@@ -118,11 +118,12 @@
 #define DEB(x)
 
 static void bdginit(void *);
-static void bdgtakeifaces(void);
 static void flush_table(void);
 static void bdg_promisc_on(void);
 static void parse_bdg_cfg(void);
 
+static int bdg_initialized = 0;
+
 static int bdg_ipfw = 0 ;
 int do_bridge = 0;
 bdg_hash_table *bdg_table = NULL ;
@@ -434,6 +435,7 @@ static void
 bdginit(void *dummy)
 {
 
+    bdg_initialized++;
     if (bdg_table == NULL)
 	bdg_table = (struct hash_table *)
 		malloc(HASH_SIZE * sizeof(struct hash_table),
@@ -459,6 +461,9 @@ bdgtakeifaces(void)
     u_char *eth_addr ;
     struct bdg_softc *bp;
 
+    if (!bdg_initialized)
+	return;
+
     bdg_ports = 0 ;
     eth_addr = bdg_addresses ;
     *bridge_cfg = '\0';
diff --git a/sys/net/bridge.h b/sys/net/bridge.h
index ea2db417059..246bb871789 100644
--- a/sys/net/bridge.h
+++ b/sys/net/bridge.h
@@ -41,6 +41,8 @@ extern bdg_hash_table *bdg_table ;
 extern unsigned char bdg_addresses[6*BDG_MAX_PORTS];
 extern int bdg_ports ;
 
+extern void bdgtakeifaces(void);
+
 /*
  * out of the 6 bytes, the last ones are more "variable". Since
  * we are on a little endian machine, we have to do some gimmick...
diff --git a/sys/net/if_ethersubr.c b/sys/net/if_ethersubr.c
index d7c410b0c81..e8cfa0d6345 100644
--- a/sys/net/if_ethersubr.c
+++ b/sys/net/if_ethersubr.c
@@ -671,6 +671,9 @@ ether_ifattach(ifp, bpf)
 		bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header));
 	if (ng_ether_attach_p != NULL)
 		(*ng_ether_attach_p)(ifp);
+#ifdef BRIDGE
+	bdgtakeifaces();
+#endif
 }
 
 /*
@@ -686,6 +689,9 @@ ether_ifdetach(ifp, bpf)
 	if (bpf)
 		bpfdetach(ifp);
 	if_detach(ifp);
+#ifdef BRIDGE
+	bdgtakeifaces();
+#endif
 }
 
 SYSCTL_DECL(_net_link);