From a4d26fdbc2a5414bb1b67198656cc7e24a4a3c3a Mon Sep 17 00:00:00 2001 From: Jakub Kicinski Date: Fri, 4 Oct 2019 16:19:27 -0700 Subject: [PATCH] net/tls: add TlsDeviceRxResync statistic Add a statistic for number of RX resyncs sent down to the NIC. Signed-off-by: Jakub Kicinski Signed-off-by: David S. Miller --- 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(+) diff --git a/Documentation/networking/tls.rst b/Documentation/networking/tls.rst index ab82362dd819..8cb2cd4e2a80 100644 --- a/Documentation/networking/tls.rst +++ b/Documentation/networking/tls.rst @@ -236,3 +236,6 @@ TLS implementation exposes the following per-namespace statistics - ``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 c9e4963e26f0..7eee233e78d2 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 5a9a86bf0ee1..f306e4c7bf15 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 2bea7ef4823c..83d9c80a684e 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 };