net/tls: add TlsDeviceRxResync statistic
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>
diff --git a/Documentation/networking/tls.rst b/Documentation/networking/tls.rst
index ab82362..8cb2cd4 100644
--- a/Documentation/networking/tls.rst
+++ b/Documentation/networking/tls.rst
@@ -236,3 +236,6 @@
- ``TlsDecryptError`` -
record decryption failed (e.g. due to incorrect authentication tag)
+
+- ``TlsDeviceRxResync`` -
+ number of RX resyncs sent to NICs handling cryptography
diff --git a/include/uapi/linux/snmp.h b/include/uapi/linux/snmp.h
index c9e4963..7eee233 100644
--- 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
};
diff --git a/net/tls/tls_device.c b/net/tls/tls_device.c
index 5a9a86b..f306e4c 100644
--- a/net/tls/tls_device.c
+++ b/net/tls/tls_device.c
@@ -661,6 +661,7 @@ static void tls_device_resync_rx(struct tls_context *tls_ctx,
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)
diff --git a/net/tls/tls_proc.c b/net/tls/tls_proc.c
index 2bea7ef..83d9c80 100644
--- a/net/tls/tls_proc.c
+++ b/net/tls/tls_proc.c
@@ -16,6 +16,7 @@ static const struct snmp_mib tls_mib_list[] = {
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
};
