From: Jakub Kicinski <jakub.kicinski@netronome.com>
Date: Fri, 4 Oct 2019 16:19:27 -0700
Subject: net/tls: add TlsDeviceRxResync statistic
Patch-mainline: v5.5-rc1
Git-commit: a4d26fdbc2a5414bb1b67198656cc7e24a4a3c3a
References: bsc#1154353
Add a statistic for number of RX resyncs sent down to the NIC.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
Documentation/networking/tls.rst | 3 +++
include/uapi/linux/snmp.h | 1 +
net/tls/tls_device.c | 1 +
net/tls/tls_proc.c | 1 +
4 files changed, 6 insertions(+)
--- a/Documentation/networking/tls.rst
+++ b/Documentation/networking/tls.rst
@@ -236,3 +236,6 @@ TLS implementation exposes the following
- ``TlsDecryptError`` -
record decryption failed (e.g. due to incorrect authentication tag)
+
+- ``TlsDeviceRxResync`` -
+ number of RX resyncs sent to NICs handling cryptography
--- a/include/uapi/linux/snmp.h
+++ b/include/uapi/linux/snmp.h
@@ -336,6 +336,7 @@ enum
LINUX_MIB_TLSTXDEVICE, /* TlsTxDevice */
LINUX_MIB_TLSRXDEVICE, /* TlsRxDevice */
LINUX_MIB_TLSDECRYPTERROR, /* TlsDecryptError */
+ LINUX_MIB_TLSRXDEVICERESYNC, /* TlsRxDeviceResync */
__LINUX_MIB_TLSMAX
};
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -669,6 +669,7 @@ static void tls_device_resync_rx(struct
netdev->tlsdev_ops->tls_dev_resync(netdev, sk, seq, rcd_sn,
TLS_OFFLOAD_CTX_DIR_RX);
clear_bit_unlock(TLS_RX_SYNC_RUNNING, &tls_ctx->flags);
+ TLS_INC_STATS(sock_net(sk), LINUX_MIB_TLSRXDEVICERESYNC);
}
void tls_device_rx_resync_new_rec(struct sock *sk, u32 rcd_len, u32 seq)
--- a/net/tls/tls_proc.c
+++ b/net/tls/tls_proc.c
@@ -16,6 +16,7 @@ static const struct snmp_mib tls_mib_lis
SNMP_MIB_ITEM("TlsTxDevice", LINUX_MIB_TLSTXDEVICE),
SNMP_MIB_ITEM("TlsRxDevice", LINUX_MIB_TLSRXDEVICE),
SNMP_MIB_ITEM("TlsDecryptError", LINUX_MIB_TLSDECRYPTERROR),
+ SNMP_MIB_ITEM("TlsRxDeviceResync", LINUX_MIB_TLSRXDEVICERESYNC),
SNMP_MIB_SENTINEL
};