crypto: af_alg - make some functions static

[ Upstream commit 466e0759269d31485074126700574230bfff3b1c ]

Some exported functions in af_alg.c aren't used outside of that file.
Therefore, un-export them and make them 'static'.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Stable-dep-of: f3c802a1f300 ("crypto: algif_aead - Only wake up when ctx->more is zero")
Signed-off-by: Sasha Levin <sashal@kernel.org>

crypto/af_alg.c

@@ -429,12 +429,12 @@ int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len)
 }
 EXPORT_SYMBOL_GPL(af_alg_make_sg);
 
-void af_alg_link_sg(struct af_alg_sgl *sgl_prev, struct af_alg_sgl *sgl_new)
+static void af_alg_link_sg(struct af_alg_sgl *sgl_prev,
+			   struct af_alg_sgl *sgl_new)
 {
 	sg_unmark_end(sgl_prev->sg + sgl_prev->npages - 1);
 	sg_chain(sgl_prev->sg, sgl_prev->npages + 1, sgl_new->sg);
 }
-EXPORT_SYMBOL_GPL(af_alg_link_sg);
 
 void af_alg_free_sg(struct af_alg_sgl *sgl)
 {
@@ -445,7 +445,7 @@ void af_alg_free_sg(struct af_alg_sgl *sgl)
 }
 EXPORT_SYMBOL_GPL(af_alg_free_sg);
 
-int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con)
+static int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con)
 {
 	struct cmsghdr *cmsg;
 
@@ -484,7 +484,6 @@ int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(af_alg_cmsg_send);
 
 /**
  * af_alg_alloc_tsgl - allocate the TX SGL
@@ -492,7 +491,7 @@ EXPORT_SYMBOL_GPL(af_alg_cmsg_send);
  * @sk socket of connection to user space
  * @return: 0 upon success, < 0 upon error
  */
-int af_alg_alloc_tsgl(struct sock *sk)
+static int af_alg_alloc_tsgl(struct sock *sk)
 {
 	struct alg_sock *ask = alg_sk(sk);
 	struct af_alg_ctx *ctx = ask->private;
@@ -521,7 +520,6 @@ int af_alg_alloc_tsgl(struct sock *sk)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(af_alg_alloc_tsgl);
 
 /**
  * aead_count_tsgl - Count number of TX SG entries
@@ -658,7 +656,7 @@ EXPORT_SYMBOL_GPL(af_alg_pull_tsgl);
  *
  * @areq Request holding the TX and RX SGL
  */
-void af_alg_free_areq_sgls(struct af_alg_async_req *areq)
+static void af_alg_free_areq_sgls(struct af_alg_async_req *areq)
 {
 	struct sock *sk = areq->sk;
 	struct alg_sock *ask = alg_sk(sk);
@@ -687,7 +685,6 @@ void af_alg_free_areq_sgls(struct af_alg_async_req *areq)
 		sock_kfree_s(sk, tsgl, areq->tsgl_entries * sizeof(*tsgl));
 	}
 }
-EXPORT_SYMBOL_GPL(af_alg_free_areq_sgls);
 
 /**
  * af_alg_wait_for_wmem - wait for availability of writable memory
@@ -696,7 +693,7 @@ EXPORT_SYMBOL_GPL(af_alg_free_areq_sgls);
  * @flags If MSG_DONTWAIT is set, then only report if function would sleep
  * @return 0 when writable memory is available, < 0 upon error
  */
-int af_alg_wait_for_wmem(struct sock *sk, unsigned int flags)
+static int af_alg_wait_for_wmem(struct sock *sk, unsigned int flags)
 {
 	DEFINE_WAIT_FUNC(wait, woken_wake_function);
 	int err = -ERESTARTSYS;
@@ -721,7 +718,6 @@ int af_alg_wait_for_wmem(struct sock *sk, unsigned int flags)
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(af_alg_wait_for_wmem);
 
 /**
  * af_alg_wmem_wakeup - wakeup caller when writable memory is available
@@ -790,8 +786,7 @@ EXPORT_SYMBOL_GPL(af_alg_wait_for_data);
  *
  * @sk socket of connection to user space
  */
-
+static void af_alg_data_wakeup(struct sock *sk)
-void af_alg_data_wakeup(struct sock *sk)
 {
 	struct alg_sock *ask = alg_sk(sk);
 	struct af_alg_ctx *ctx = ask->private;
@@ -809,7 +804,6 @@ void af_alg_data_wakeup(struct sock *sk)
 	sk_wake_async(sk, SOCK_WAKE_SPACE, POLL_OUT);
 	rcu_read_unlock();
 }
-EXPORT_SYMBOL_GPL(af_alg_data_wakeup);
 
 /**
  * af_alg_sendmsg - implementation of sendmsg system call handler

include/crypto/if_alg.h

@@ -172,9 +172,6 @@ int af_alg_accept(struct sock *sk, struct socket *newsock, bool kern);
 
 int af_alg_make_sg(struct af_alg_sgl *sgl, struct iov_iter *iter, int len);
 void af_alg_free_sg(struct af_alg_sgl *sgl);
-void af_alg_link_sg(struct af_alg_sgl *sgl_prev, struct af_alg_sgl *sgl_new);
-
-int af_alg_cmsg_send(struct msghdr *msg, struct af_alg_control *con);
 
 static inline struct alg_sock *alg_sk(struct sock *sk)
 {
@@ -233,15 +230,11 @@ static inline bool af_alg_readable(struct sock *sk)
 	return PAGE_SIZE <= af_alg_rcvbuf(sk);
 }
 
-int af_alg_alloc_tsgl(struct sock *sk);
 unsigned int af_alg_count_tsgl(struct sock *sk, size_t bytes, size_t offset);
 void af_alg_pull_tsgl(struct sock *sk, size_t used, struct scatterlist *dst,
 		      size_t dst_offset);
-void af_alg_free_areq_sgls(struct af_alg_async_req *areq);
-int af_alg_wait_for_wmem(struct sock *sk, unsigned int flags);
 void af_alg_wmem_wakeup(struct sock *sk);
 int af_alg_wait_for_data(struct sock *sk, unsigned flags);
-void af_alg_data_wakeup(struct sock *sk);
 int af_alg_sendmsg(struct socket *sock, struct msghdr *msg, size_t size,
 		   unsigned int ivsize);
 ssize_t af_alg_sendpage(struct socket *sock, struct page *page,