net80211: unbreak 'show all vaps(/a)' ddb command

Replace ifnet list lookup (which is broken since r287197, because
IFT_IEEE80211 type is not used anymore) with iteration on
ieee80211com list.

Reviewed by:	adrian
Differential Revision:	https://reviews.freebsd.org/D6419

3 files changed, 31 insertions, 20 deletions

diff --git a/sys/net80211/ieee80211.c b/sys/net80211/ieee80211.c
index d2b254a..453f119 100644
--- a/sys/net80211/ieee80211.c
+++ b/sys/net80211/ieee80211.c
@@ -406,6 +406,17 @@ ieee80211_find_com(const char *name)
 	return (ic);
 }
 
+void
+ieee80211_iterate_coms(ieee80211_com_iter_func *f, void *arg)
+{
+	struct ieee80211com *ic;
+
+	mtx_lock(&ic_list_mtx);
+	LIST_FOREACH(ic, &ic_head, ic_next)
+		(*f)(arg, ic);
+	mtx_unlock(&ic_list_mtx);
+}
+
 /*
  * Default reset method for use with the ioctl support.  This
  * method is invoked after any state change in the 802.11
diff --git a/sys/net80211/ieee80211_ddb.c b/sys/net80211/ieee80211_ddb.c
index de7a243..f758875 100644
--- a/sys/net80211/ieee80211_ddb.c
+++ b/sys/net80211/ieee80211_ddb.c
@@ -69,6 +69,8 @@ static void _db_show_vap(const struct ieee80211vap *, int, int);
 static void _db_show_com(const struct ieee80211com *,
 	int showvaps, int showsta, int showmesh, int showprocs);
 
+static void _db_show_all_vaps(void *, struct ieee80211com *);
+
 static void _db_show_node_table(const char *tag,
 	const struct ieee80211_node_table *);
 static void _db_show_channel(const char *tag, const struct ieee80211_channel *);
@@ -161,8 +163,6 @@ DB_SHOW_COMMAND(com, db_show_com)
 
 DB_SHOW_ALL_COMMAND(vaps, db_show_all_vaps)
 {
-	VNET_ITERATOR_DECL(vnet_iter);
-	const struct ifnet *ifp;
 	int i, showall = 0;
 
 	for (i = 0; modif[i] != '\0'; i++)
@@ -172,24 +172,7 @@ DB_SHOW_ALL_COMMAND(vaps, db_show_all_vaps)
 			break;
 		}
 
-	VNET_FOREACH(vnet_iter) {
-		TAILQ_FOREACH(ifp, &V_ifnet, if_list)
-			if (ifp->if_type == IFT_IEEE80211) {
-				const struct ieee80211com *ic = ifp->if_l2com;
-
-				if (!showall) {
-					const struct ieee80211vap *vap;
-					db_printf("%s: com %p vaps:",
-					    ifp->if_xname, ic);
-					TAILQ_FOREACH(vap, &ic->ic_vaps,
-					    iv_next)
-						db_printf(" %s(%p)",
-						    vap->iv_ifp->if_xname, vap);
-					db_printf("\n");
-				} else
-					_db_show_com(ic, 1, 1, 1, 1);
-			}
-	}
+	ieee80211_iterate_coms(_db_show_all_vaps, &showall);
 }
 
 #ifdef IEEE80211_SUPPORT_MESH
@@ -683,6 +666,21 @@ _db_show_com(const struct ieee80211com *ic, int showvaps, int showsta,
 }
 
 static void
+_db_show_all_vaps(void *arg, struct ieee80211com *ic)
+{
+	int showall = *(int *)arg;
+
+	if (!showall) {
+		const struct ieee80211vap *vap;
+		db_printf("%s: com %p vaps:", ic->ic_name, ic);
+		TAILQ_FOREACH(vap, &ic->ic_vaps, iv_next)
+			db_printf(" %s(%p)", vap->iv_ifp->if_xname, vap);
+		db_printf("\n");
+	} else
+		_db_show_com(ic, 1, 1, 1, 1);
+}
+
+static void
 _db_show_node_table(const char *tag, const struct ieee80211_node_table *nt)
 {
 	int i;
diff --git a/sys/net80211/ieee80211_var.h b/sys/net80211/ieee80211_var.h
index f94a15a..3c33f0a 100644
--- a/sys/net80211/ieee80211_var.h
+++ b/sys/net80211/ieee80211_var.h
@@ -714,6 +714,8 @@ void	ieee80211_drain(struct ieee80211com *);
 void	ieee80211_chan_init(struct ieee80211com *);
 struct ieee80211com *ieee80211_find_vap(const uint8_t mac[IEEE80211_ADDR_LEN]);
 struct ieee80211com *ieee80211_find_com(const char *name);
+typedef void ieee80211_com_iter_func(void *, struct ieee80211com *);
+void	ieee80211_iterate_coms(ieee80211_com_iter_func *, void *);
 int	ieee80211_media_change(struct ifnet *);
 void	ieee80211_media_status(struct ifnet *, struct ifmediareq *);
 int	ieee80211_ioctl(struct ifnet *, u_long, caddr_t);