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authorJakub Kicinski <kuba@kernel.org>2024-02-06 17:18:18 -0800
committerDavid S. Miller <davem@davemloft.net>2024-02-10 21:38:19 +0000
commitc57ca512f3b68ddcd62bda9cc24a8f5584ab01b1 (patch)
tree176ad177cf1c455360e6726745c36f9c8c30073f /net
parent2fbdc5c6b130661854dc5923f0870770410acce2 (diff)
net: tls: factor out tls_*crypt_async_wait()
Factor out waiting for async encrypt and decrypt to finish. There are already multiple copies and a subsequent fix will need more. No functional changes. Note that crypto_wait_req() returns wait->err Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/tls/tls_sw.c96
1 files changed, 45 insertions, 51 deletions
diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 31e8a94dfc11..6a73714f34cc 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -230,6 +230,20 @@ static void tls_decrypt_done(void *data, int err)
spin_unlock_bh(&ctx->decrypt_compl_lock);
}
+static int tls_decrypt_async_wait(struct tls_sw_context_rx *ctx)
+{
+ int pending;
+
+ spin_lock_bh(&ctx->decrypt_compl_lock);
+ reinit_completion(&ctx->async_wait.completion);
+ pending = atomic_read(&ctx->decrypt_pending);
+ spin_unlock_bh(&ctx->decrypt_compl_lock);
+ if (pending)
+ crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
+
+ return ctx->async_wait.err;
+}
+
static int tls_do_decryption(struct sock *sk,
struct scatterlist *sgin,
struct scatterlist *sgout,
@@ -495,6 +509,28 @@ static void tls_encrypt_done(void *data, int err)
schedule_delayed_work(&ctx->tx_work.work, 1);
}
+static int tls_encrypt_async_wait(struct tls_sw_context_tx *ctx)
+{
+ int pending;
+
+ spin_lock_bh(&ctx->encrypt_compl_lock);
+ ctx->async_notify = true;
+
+ pending = atomic_read(&ctx->encrypt_pending);
+ spin_unlock_bh(&ctx->encrypt_compl_lock);
+ if (pending)
+ crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
+ else
+ reinit_completion(&ctx->async_wait.completion);
+
+ /* There can be no concurrent accesses, since we have no
+ * pending encrypt operations
+ */
+ WRITE_ONCE(ctx->async_notify, false);
+
+ return ctx->async_wait.err;
+}
+
static int tls_do_encryption(struct sock *sk,
struct tls_context *tls_ctx,
struct tls_sw_context_tx *ctx,
@@ -984,7 +1020,6 @@ static int tls_sw_sendmsg_locked(struct sock *sk, struct msghdr *msg,
int num_zc = 0;
int orig_size;
int ret = 0;
- int pending;
if (!eor && (msg->msg_flags & MSG_EOR))
return -EINVAL;
@@ -1163,24 +1198,12 @@ trim_sgl:
if (!num_async) {
goto send_end;
} else if (num_zc) {
- /* Wait for pending encryptions to get completed */
- spin_lock_bh(&ctx->encrypt_compl_lock);
- ctx->async_notify = true;
-
- pending = atomic_read(&ctx->encrypt_pending);
- spin_unlock_bh(&ctx->encrypt_compl_lock);
- if (pending)
- crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
- else
- reinit_completion(&ctx->async_wait.completion);
-
- /* There can be no concurrent accesses, since we have no
- * pending encrypt operations
- */
- WRITE_ONCE(ctx->async_notify, false);
+ int err;
- if (ctx->async_wait.err) {
- ret = ctx->async_wait.err;
+ /* Wait for pending encryptions to get completed */
+ err = tls_encrypt_async_wait(ctx);
+ if (err) {
+ ret = err;
copied = 0;
}
}
@@ -1229,7 +1252,6 @@ void tls_sw_splice_eof(struct socket *sock)
ssize_t copied = 0;
bool retrying = false;
int ret = 0;
- int pending;
if (!ctx->open_rec)
return;
@@ -1264,22 +1286,7 @@ retry:
}
/* Wait for pending encryptions to get completed */
- spin_lock_bh(&ctx->encrypt_compl_lock);
- ctx->async_notify = true;
-
- pending = atomic_read(&ctx->encrypt_pending);
- spin_unlock_bh(&ctx->encrypt_compl_lock);
- if (pending)
- crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
- else
- reinit_completion(&ctx->async_wait.completion);
-
- /* There can be no concurrent accesses, since we have no pending
- * encrypt operations
- */
- WRITE_ONCE(ctx->async_notify, false);
-
- if (ctx->async_wait.err)
+ if (tls_encrypt_async_wait(ctx))
goto unlock;
/* Transmit if any encryptions have completed */
@@ -2109,16 +2116,10 @@ put_on_rx_list:
recv_end:
if (async) {
- int ret, pending;
+ int ret;
/* Wait for all previously submitted records to be decrypted */
- spin_lock_bh(&ctx->decrypt_compl_lock);
- reinit_completion(&ctx->async_wait.completion);
- pending = atomic_read(&ctx->decrypt_pending);
- spin_unlock_bh(&ctx->decrypt_compl_lock);
- ret = 0;
- if (pending)
- ret = crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
+ ret = tls_decrypt_async_wait(ctx);
__skb_queue_purge(&ctx->async_hold);
if (ret) {
@@ -2435,16 +2436,9 @@ void tls_sw_release_resources_tx(struct sock *sk)
struct tls_context *tls_ctx = tls_get_ctx(sk);
struct tls_sw_context_tx *ctx = tls_sw_ctx_tx(tls_ctx);
struct tls_rec *rec, *tmp;
- int pending;
/* Wait for any pending async encryptions to complete */
- spin_lock_bh(&ctx->encrypt_compl_lock);
- ctx->async_notify = true;
- pending = atomic_read(&ctx->encrypt_pending);
- spin_unlock_bh(&ctx->encrypt_compl_lock);
-
- if (pending)
- crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
+ tls_encrypt_async_wait(ctx);
tls_tx_records(sk, -1);