data: only uses kmem_cache for parallism

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

3 files changed, 11 insertions, 0 deletions

diff --git a/src/data.c b/src/data.c
index ab775a5..f53bbc6 100644
--- a/src/data.c
+++ b/src/data.c
@@ -42,6 +42,7 @@ struct decryption_ctx {
 	int ret;
 };
 
+#ifdef CONFIG_WIREGUARD_PARALLEL
 static struct kmem_cache *encryption_ctx_cache;
 static struct kmem_cache *decryption_ctx_cache;
 
@@ -64,6 +65,7 @@ void packet_deinit_data_caches(void)
 	kmem_cache_destroy(encryption_ctx_cache);
 	kmem_cache_destroy(decryption_ctx_cache);
 }
+#endif
 
 /* This is RFC6479, a replay detection bitmap algorithm that avoids bitshifts */
 static inline bool counter_validate(union noise_counter *counter, u64 their_counter)
diff --git a/src/main.c b/src/main.c
index e381d09..e4787ac 100644
--- a/src/main.c
+++ b/src/main.c
@@ -29,13 +29,17 @@ static int __init mod_init(void)
 	chacha20poly1305_init();
 	noise_init();
 
+#ifdef CONFIG_WIREGUARD_PARALLEL
 	ret = packet_init_data_caches();
 	if (ret < 0)
 		return ret;
+#endif
 
 	ret = device_init();
 	if (ret < 0) {
+#ifdef CONFIG_WIREGUARD_PARALLEL
 		packet_deinit_data_caches();
+#endif
 		return ret;
 	}
 
@@ -47,7 +51,9 @@ static int __init mod_init(void)
 static void __exit mod_exit(void)
 {
 	device_uninit();
+#ifdef CONFIG_WIREGUARD_PARALLEL
 	packet_deinit_data_caches();
+#endif
 	pr_debug("WireGuard has been unloaded\n");
 }
 
diff --git a/src/packets.h b/src/packets.h
index c9d82d1..03ba891 100644
--- a/src/packets.h
+++ b/src/packets.h
@@ -41,8 +41,11 @@ void packet_send_queued_handshakes(struct work_struct *work);
 /* data.c */
 int packet_create_data(struct sk_buff_head *queue, struct wireguard_peer *peer, void(*callback)(struct sk_buff_head *, struct wireguard_peer *));
 void packet_consume_data(struct sk_buff *skb, size_t offset, struct wireguard_device *wg, void(*callback)(struct sk_buff *, struct wireguard_peer *, struct sockaddr_storage *, bool used_new_key, int err));
+
+#ifdef CONFIG_WIREGUARD_PARALLEL
 int packet_init_data_caches(void);
 void packet_deinit_data_caches(void);
+#endif
 
 #define DATA_PACKET_HEAD_ROOM ALIGN(sizeof(struct message_data) + SKB_HEADER_LEN, 4)