From 9c919a80df451e1d3d4853d6ce2fb0f05d7f7516 Mon Sep 17 00:00:00 2001
From: oleg <oleg@ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f>
Date: Mon, 27 Dec 2010 18:55:16 +0000
Subject: [PATCH] MFC r203548:

Propagate the vlan events to the underlying interfaces/members so they
can do initialization of hw related features.

PR:		kern/141646
Approved by:	re (bz)


git-svn-id: svn://svn.freebsd.org/base/releng/8.2@216741 ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
---
 sys/net/if_lagg.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++
 sys/net/if_lagg.h |  4 ++++
 2 files changed, 61 insertions(+)

diff --git a/sys/net/if_lagg.c b/sys/net/if_lagg.c
index 1abcf08d..c00c4193 100644
--- a/sys/net/if_lagg.c
+++ b/sys/net/if_lagg.c
@@ -39,6 +39,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/lock.h>
 #include <sys/rwlock.h>
 #include <sys/taskqueue.h>
+#include <sys/eventhandler.h>
 
 #include <net/ethernet.h>
 #include <net/if.h>
@@ -204,6 +205,50 @@ static moduledata_t lagg_mod = {
 
 DECLARE_MODULE(if_lagg, lagg_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
 
+#if __FreeBSD_version >= 800000
+/*
+ * This routine is run via an vlan
+ * config EVENT
+ */
+static void
+lagg_register_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
+{
+        struct lagg_softc       *sc = ifp->if_softc;
+        struct lagg_port        *lp;
+
+        if (ifp->if_softc !=  arg)   /* Not our event */
+                return;
+
+        LAGG_RLOCK(sc);
+        if (!SLIST_EMPTY(&sc->sc_ports)) {
+                SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
+                        EVENTHANDLER_INVOKE(vlan_config, lp->lp_ifp, vtag);
+        }
+        LAGG_RUNLOCK(sc);
+}
+
+/*
+ * This routine is run via an vlan
+ * unconfig EVENT
+ */
+static void
+lagg_unregister_vlan(void *arg, struct ifnet *ifp, u_int16_t vtag)
+{
+        struct lagg_softc       *sc = ifp->if_softc;
+        struct lagg_port        *lp;
+
+        if (ifp->if_softc !=  arg)   /* Not our event */
+                return;
+
+        LAGG_RLOCK(sc);
+        if (!SLIST_EMPTY(&sc->sc_ports)) {
+                SLIST_FOREACH(lp, &sc->sc_ports, lp_entries)
+                        EVENTHANDLER_INVOKE(vlan_unconfig, lp->lp_ifp, vtag);
+        }
+        LAGG_RUNLOCK(sc);
+}
+#endif
+
 static int
 lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params)
 {
@@ -259,6 +304,13 @@ lagg_clone_create(struct if_clone *ifc, int unit, caddr_t params)
 	 */
 	ether_ifattach(ifp, eaddr);
 
+#if __FreeBSD_version >= 800000
+	sc->vlan_attach = EVENTHANDLER_REGISTER(vlan_config,
+		lagg_register_vlan, sc, EVENTHANDLER_PRI_FIRST);
+	sc->vlan_detach = EVENTHANDLER_REGISTER(vlan_unconfig,
+		lagg_unregister_vlan, sc, EVENTHANDLER_PRI_FIRST);
+#endif
+
 	/* Insert into the global list of laggs */
 	mtx_lock(&lagg_list_mtx);
 	SLIST_INSERT_HEAD(&lagg_list, sc, sc_entries);
@@ -278,6 +330,11 @@ lagg_clone_destroy(struct ifnet *ifp)
 	lagg_stop(sc);
 	ifp->if_flags &= ~IFF_UP;
 
+#if __FreeBSD_version >= 800000
+	EVENTHANDLER_DEREGISTER(vlan_config, sc->vlan_attach);
+	EVENTHANDLER_DEREGISTER(vlan_unconfig, sc->vlan_detach);
+#endif
+
 	/* Shutdown and remove lagg ports */
 	while ((lp = SLIST_FIRST(&sc->sc_ports)) != NULL)
 		lagg_port_destroy(lp, 1);
diff --git a/sys/net/if_lagg.h b/sys/net/if_lagg.h
index 896f5b31..0034c617 100644
--- a/sys/net/if_lagg.h
+++ b/sys/net/if_lagg.h
@@ -198,6 +198,10 @@ struct lagg_softc {
 	void	(*sc_lladdr)(struct lagg_softc *);
 	void	(*sc_req)(struct lagg_softc *, caddr_t);
 	void	(*sc_portreq)(struct lagg_port *, caddr_t);
+#if __FreeBSD_version >= 800000
+	eventhandler_tag vlan_attach;
+	eventhandler_tag vlan_detach;
+#endif
 };
 
 struct lagg_port {
-- 
2.42.0