various: nits from willy

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

4 files changed, 6 insertions, 8 deletions

diff --git a/src/data.c b/src/data.c
index b6d20b8..dd7f0cb 100644
--- a/src/data.c
+++ b/src/data.c
@@ -439,11 +439,9 @@ void packet_consume_data(struct sk_buff *skb, size_t offset, struct wireguard_de
 	ret = -EINVAL;
 	rcu_read_lock();
 	keypair = noise_keypair_get((struct noise_keypair *)index_hashtable_lookup(&wg->index_hashtable, INDEX_HASHTABLE_KEYPAIR, idx));
-	if (unlikely(!keypair)) {
-		rcu_read_unlock();
-		goto err;
-	}
 	rcu_read_unlock();
+	if (unlikely(!keypair))
+		goto err;
 #ifdef CONFIG_WIREGUARD_PARALLEL
 	if (cpumask_weight(cpu_online_mask) > 1) {
 		unsigned int cpu = choose_cpu(idx);
diff --git a/src/device.c b/src/device.c
index 564d09b..5a294ec 100644
--- a/src/device.c
+++ b/src/device.c
@@ -121,8 +121,8 @@ static netdev_tx_t xmit(struct sk_buff *skb, struct net_device *dev)
 	read_unlock_bh(&peer->endpoint_lock);
 	if (unlikely(ret)) {
 		net_dbg_ratelimited("No valid endpoint has been configured or discovered for device\n");
-		peer_put(peer);
 		skb_unsendable(skb, dev);
+		peer_put(peer);
 		return -EHOSTUNREACH;
 	}
 
diff --git a/src/hashtables.c b/src/hashtables.c
index 8616015..d2a9cf9 100644
--- a/src/hashtables.c
+++ b/src/hashtables.c
@@ -68,7 +68,7 @@ void index_hashtable_init(struct index_hashtable *table)
 __le32 index_hashtable_insert(struct index_hashtable *table, struct index_hashtable_entry *entry)
 {
 	struct index_hashtable_entry *existing_entry;
-	uint64_t rand;
+	unsigned long rand = get_random_long();
 
 	spin_lock(&table->lock);
 	hlist_del_init_rcu(&entry->index_hash);
@@ -78,7 +78,7 @@ __le32 index_hashtable_insert(struct index_hashtable *table, struct index_hashta
 
 search_unused_slot:
 	/* First we try to find an unused slot, randomly, while unlocked. */
-	rand = get_random_long();
+	++rand;
 	entry->index = (__force __le32)siphash24((uint8_t *)&rand, sizeof(rand), table->key);
 	hlist_for_each_entry_rcu(existing_entry, index_bucket(table, entry->index), index_hash) {
 		if (existing_entry->index == entry->index)
diff --git a/src/receive.c b/src/receive.c
index 76a1960..0878872 100644
--- a/src/receive.c
+++ b/src/receive.c
@@ -265,9 +265,9 @@ static void receive_data_packet(struct sk_buff *skb, struct wireguard_peer *peer
 	peer_put(routed_peer); /* We don't need the extra reference. */
 
 	if (unlikely(routed_peer != peer)) {
-		net_dbg_skb_ratelimited("Packet has unallowed src IP (%pISc) from peer %Lu (%pISpfsc)\n", skb, peer->internal_id, &peer->endpoint.addr_storage);
 		++dev->stats.rx_errors;
 		++dev->stats.rx_frame_errors;
+		net_dbg_skb_ratelimited("Packet has unallowed src IP (%pISc) from peer %Lu (%pISpfsc)\n", skb, peer->internal_id, &peer->endpoint.addr_storage);
 		goto packet_processed;
 	}