[PATCH 5.15 83/84] Revert "tls: rx: move counting TlsDecryptErrors for sync"

Greg Kroah-Hartman
2024-03-04T21:56:08Z

From: Gal Pressman <gal@nvidia.com>

commit a069a90554168ac4cc81af65f000557d2a8a0745 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
net/tls/tls_sw.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -278,9 +278,6 @@ static int tls_do_decryption(struct sock
}
darg->async = false;

- if (ret == -EBADMSG)
- TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSDECRYPTERROR);
-
return ret;
}

@@ -1585,8 +1582,11 @@ static int decrypt_skb_update(struct soc
}

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;