Revert "tls: rx: move counting TlsDecryptErrors for sync"

This reverts commit 284b4d93daee56dff3e10029ddf2e03227f50dbf.
When using TLS device offload and coming from tls_device_reencrypt()
flow, -EBADMSG error in tls_do_decryption() should not be counted
towards the TLSTlsDecryptError counter.

Move the counter increase back to the decrypt_internal() call site in
decrypt_skb_update().
This also fixes an issue where:
	if (n_sgin < 1)
		return -EBADMSG;

Errors in decrypt_internal() were not counted after the cited patch.

Fixes: 284b4d93daee ("tls: rx: move counting TlsDecryptErrors for sync")
Cc: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 0513f82..e30649f 100644 (file)
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -267,9 +267,6 @@ static int tls_do_decryption(struct sock *sk,
        }
        darg->async = false;
 
-       if (ret == -EBADMSG)
-               TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSDECRYPTERROR);
-
        return ret;
 }
 
@@ -1579,8 +1576,11 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
        }
 
        err = decrypt_internal(sk, skb, dest, NULL, darg);
-       if (err < 0)
+       if (err < 0) {
+               if (err == -EBADMSG)
+                       TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSDECRYPTERROR);
                return err;
+       }
        if (darg->async)
                goto decrypt_next;