freebsd_network: Add new APIs used by FreeBSD 13 drivers.

src/libs/compat/freebsd_network/compat/net/if_var.h

@@ -821,6 +821,16 @@ int if_setupmultiaddr(if_t ifp, void *mta, int *cnt, int max);
 int if_multiaddr_array(if_t ifp, void *mta, int *cnt, int max);
 int if_multiaddr_count(if_t ifp, int max);
 
+/*
+ * Traversing through interface address lists.
+ */
+struct sockaddr_dl;
+typedef u_int iflladdr_cb_t(void *, struct sockaddr_dl *, u_int);
+u_int if_foreach_lladdr(if_t, iflladdr_cb_t, void *);
+u_int if_foreach_llmaddr(if_t, iflladdr_cb_t, void *);
+u_int if_lladdr_count(if_t);
+u_int if_llmaddr_count(if_t);
+
 /* Functions */
 void if_setinitfn(if_t ifp, void (*)(void *));
 void if_setioctlfn(if_t ifp, int (*)(if_t, u_long, caddr_t));

src/libs/compat/freebsd_network/compat/sys/taskqueue.h

@@ -55,6 +55,7 @@ struct taskqueue *taskqueue_create_fast(const char *name, int mflags,
 
 void task_init(struct task *, int prio, task_fn_t handler, void *arg);
 #define TASK_INIT(taskp, prio, hand, arg) task_init(taskp, prio, hand, arg)
+#define NET_TASK_INIT TASK_INIT
 
 void timeout_task_init(struct taskqueue *queue, struct timeout_task *timeout_task,
 	int priority, task_fn_t func, void *context);

src/libs/compat/freebsd_network/if.c

@@ -1262,6 +1262,38 @@ if_multiaddr_count(if_t ifp, int max)
 	return (count);
 }
 
+u_int
+if_llmaddr_count(if_t ifp)
+{
+	struct ifmultiaddr *ifma;
+	int count;
+
+	count = 0;
+	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+		if (ifma->ifma_addr->sa_family == AF_LINK)
+			count++;
+	}
+
+	return (count);
+}
+
+u_int
+if_foreach_llmaddr(if_t ifp, iflladdr_cb_t cb, void *cb_arg)
+{
+	struct ifmultiaddr *ifma;
+	u_int count;
+
+	count = 0;
+	TAILQ_FOREACH(ifma, &ifp->if_multiaddrs, ifma_link) {
+		if (ifma->ifma_addr->sa_family != AF_LINK)
+			continue;
+		count += (*cb)(cb_arg, (struct sockaddr_dl *)ifma->ifma_addr,
+			count);
+	}
+
+	return (count);
+}
+
 struct mbuf *
 if_dequeue(if_t ifp)
 {