tipc: Add scaffolding to change completion function signature

This patch adds temporary scaffolding so that the Crypto API
completion function can take a void * instead of crypto_async_request.
Once affected users have been converted this can be removed.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

net/tipc/crypto.c

@@ -267,10 +267,10 @@ static int tipc_aead_encrypt(struct tipc_aead *aead, struct sk_buff *skb,
 			     struct tipc_bearer *b,
 			     struct tipc_media_addr *dst,
 			     struct tipc_node *__dnode);
-static void tipc_aead_encrypt_done(struct crypto_async_request *base, int err);
+static void tipc_aead_encrypt_done(crypto_completion_data_t *data, int err);
 static int tipc_aead_decrypt(struct net *net, struct tipc_aead *aead,
 			     struct sk_buff *skb, struct tipc_bearer *b);
-static void tipc_aead_decrypt_done(struct crypto_async_request *base, int err);
+static void tipc_aead_decrypt_done(crypto_completion_data_t *data, int err);
 static inline int tipc_ehdr_size(struct tipc_ehdr *ehdr);
 static int tipc_ehdr_build(struct net *net, struct tipc_aead *aead,
 			   u8 tx_key, struct sk_buff *skb,
@@ -830,9 +830,9 @@ static int tipc_aead_encrypt(struct tipc_aead *aead, struct sk_buff *skb,
 	return rc;
 }
 
-static void tipc_aead_encrypt_done(struct crypto_async_request *base, int err)
+static void tipc_aead_encrypt_done(crypto_completion_data_t *data, int err)
 {
-	struct sk_buff *skb = base->data;
+	struct sk_buff *skb = crypto_get_completion_data(data);
 	struct tipc_crypto_tx_ctx *tx_ctx = TIPC_SKB_CB(skb)->crypto_ctx;
 	struct tipc_bearer *b = tx_ctx->bearer;
 	struct tipc_aead *aead = tx_ctx->aead;
@@ -954,9 +954,9 @@ static int tipc_aead_decrypt(struct net *net, struct tipc_aead *aead,
 	return rc;
 }
 
-static void tipc_aead_decrypt_done(struct crypto_async_request *base, int err)
+static void tipc_aead_decrypt_done(crypto_completion_data_t *data, int err)
 {
-	struct sk_buff *skb = base->data;
+	struct sk_buff *skb = crypto_get_completion_data(data);
 	struct tipc_crypto_rx_ctx *rx_ctx = TIPC_SKB_CB(skb)->crypto_ctx;
 	struct tipc_bearer *b = rx_ctx->bearer;
 	struct tipc_aead *aead = rx_ctx->aead;