macvlan: Use 'hash' iterators to simplify code

Use 'hash_for_each_rcu' and 'hash_for_each_safe' instead of hand writing
them. This saves some lines of code, reduce indentation and improve
readability.
Signed-off-by: NChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/macvlan.c

@@ -272,8 +272,7 @@ static void macvlan_broadcast(struct sk_buff *skb,
 	if (skb->protocol == htons(ETH_P_PAUSE))
 		return;
 
-	for (i = 0; i < MACVLAN_HASH_SIZE; i++) {
-		hlist_for_each_entry_rcu(vlan, &port->vlan_hash[i], hlist) {
+	hash_for_each_rcu(port->vlan_hash, i, vlan, hlist) {
 		if (vlan->dev == src || !(vlan->mode & mode))
 			continue;
 
@@ -284,14 +283,12 @@ static void macvlan_broadcast(struct sk_buff *skb,
 		err = NET_RX_DROP;
 		nskb = skb_clone(skb, GFP_ATOMIC);
 		if (likely(nskb))
-				err = macvlan_broadcast_one(
-					nskb, vlan, eth,
+			err = macvlan_broadcast_one(nskb, vlan, eth,
 					mode == MACVLAN_MODE_BRIDGE) ?:
 			      netif_rx_ni(nskb);
 		macvlan_count_rx(vlan, skb->len + ETH_HLEN,
 				 err == NET_RX_SUCCESS, true);
 	}
-	}
 }
 
 static void macvlan_process_broadcast(struct work_struct *w)
@@ -380,20 +377,14 @@ static void macvlan_broadcast_enqueue(struct macvlan_port *port,
 static void macvlan_flush_sources(struct macvlan_port *port,
 				  struct macvlan_dev *vlan)
 {
-	int i;
-
-	for (i = 0; i < MACVLAN_HASH_SIZE; i++) {
-		struct hlist_node *h, *n;
-
-		hlist_for_each_safe(h, n, &port->vlan_source_hash[i]) {
 	struct macvlan_source_entry *entry;
+	struct hlist_node *next;
+	int i;
 
-			entry = hlist_entry(h, struct macvlan_source_entry,
-					    hlist);
+	hash_for_each_safe(port->vlan_source_hash, i, next, entry, hlist)
 		if (entry->vlan == vlan)
 			macvlan_hash_del_source(entry);
-		}
-	}
+
 	vlan->macaddr_count = 0;
 }