From 43585a41bd894925abe5015edbce475beb3d8c10 Mon Sep 17 00:00:00 2001 From: Ilya Lesokhin Date: Mon, 30 Apr 2018 10:16:21 +0300 Subject: [PATCH] net/mlx5e: TLS, Add error statistics Add statistics for rare TLS related errors. Since the errors are rare we have a counter per netdev rather then per SQ. Signed-off-by: Ilya Lesokhin Signed-off-by: Boris Pismenny Acked-by: Saeed Mahameed Signed-off-by: David S. Miller --- .../net/ethernet/mellanox/mlx5/core/Makefile | 2 +- drivers/net/ethernet/mellanox/mlx5/core/en.h | 3 + .../mellanox/mlx5/core/en_accel/tls.c | 22 +++++ .../mellanox/mlx5/core/en_accel/tls.h | 22 +++++ .../mellanox/mlx5/core/en_accel/tls_rxtx.c | 24 +++-- .../mellanox/mlx5/core/en_accel/tls_stats.c | 89 +++++++++++++++++++ .../net/ethernet/mellanox/mlx5/core/en_main.c | 4 + .../ethernet/mellanox/mlx5/core/en_stats.c | 22 +++++ 8 files changed, 178 insertions(+), 10 deletions(-) create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_stats.c diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net/ethernet/mellanox/mlx5/core/Makefile index ec785f589666..a7135f5d5cf6 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile +++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile @@ -28,6 +28,6 @@ mlx5_core-$(CONFIG_MLX5_CORE_IPOIB) += ipoib/ipoib.o ipoib/ethtool.o ipoib/ipoib mlx5_core-$(CONFIG_MLX5_EN_IPSEC) += en_accel/ipsec.o en_accel/ipsec_rxtx.o \ en_accel/ipsec_stats.o -mlx5_core-$(CONFIG_MLX5_EN_TLS) += en_accel/tls.o en_accel/tls_rxtx.o +mlx5_core-$(CONFIG_MLX5_EN_TLS) += en_accel/tls.o en_accel/tls_rxtx.o en_accel/tls_stats.o CFLAGS_tracepoint.o := -I$(src) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h index ca5b8523bc95..9cc07da09b70 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -801,6 +801,9 @@ struct mlx5e_priv { #ifdef CONFIG_MLX5_EN_IPSEC struct mlx5e_ipsec *ipsec; #endif +#ifdef CONFIG_MLX5_EN_TLS + struct mlx5e_tls *tls; +#endif }; struct mlx5e_profile { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c index aa6981c98bdc..d167845271c3 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.c @@ -173,3 +173,25 @@ void mlx5e_tls_build_netdev(struct mlx5e_priv *priv) netdev->hw_features |= NETIF_F_HW_TLS_TX; netdev->tlsdev_ops = &mlx5e_tls_ops; } + +int mlx5e_tls_init(struct mlx5e_priv *priv) +{ + struct mlx5e_tls *tls = kzalloc(sizeof(*tls), GFP_KERNEL); + + if (!tls) + return -ENOMEM; + + priv->tls = tls; + return 0; +} + +void mlx5e_tls_cleanup(struct mlx5e_priv *priv) +{ + struct mlx5e_tls *tls = priv->tls; + + if (!tls) + return; + + kfree(tls); + priv->tls = NULL; +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.h b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.h index f7216b9b98e2..b6162178f621 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls.h @@ -38,6 +38,17 @@ #include #include "en.h" +struct mlx5e_tls_sw_stats { + atomic64_t tx_tls_drop_metadata; + atomic64_t tx_tls_drop_resync_alloc; + atomic64_t tx_tls_drop_no_sync_data; + atomic64_t tx_tls_drop_bypass_required; +}; + +struct mlx5e_tls { + struct mlx5e_tls_sw_stats sw_stats; +}; + struct mlx5e_tls_offload_context { struct tls_offload_context base; u32 expected_seq; @@ -55,10 +66,21 @@ mlx5e_get_tls_tx_context(struct tls_context *tls_ctx) } void mlx5e_tls_build_netdev(struct mlx5e_priv *priv); +int mlx5e_tls_init(struct mlx5e_priv *priv); +void mlx5e_tls_cleanup(struct mlx5e_priv *priv); + +int mlx5e_tls_get_count(struct mlx5e_priv *priv); +int mlx5e_tls_get_strings(struct mlx5e_priv *priv, uint8_t *data); +int mlx5e_tls_get_stats(struct mlx5e_priv *priv, u64 *data); #else static inline void mlx5e_tls_build_netdev(struct mlx5e_priv *priv) { } +static inline int mlx5e_tls_init(struct mlx5e_priv *priv) { return 0; } +static inline void mlx5e_tls_cleanup(struct mlx5e_priv *priv) { } +static inline int mlx5e_tls_get_count(struct mlx5e_priv *priv) { return 0; } +static inline int mlx5e_tls_get_strings(struct mlx5e_priv *priv, uint8_t *data) { return 0; } +static inline int mlx5e_tls_get_stats(struct mlx5e_priv *priv, u64 *data) { return 0; } #endif diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_rxtx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_rxtx.c index 49e8d455ebc3..ad2790fb5966 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_rxtx.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_rxtx.c @@ -164,7 +164,8 @@ static struct sk_buff * mlx5e_tls_handle_ooo(struct mlx5e_tls_offload_context *context, struct mlx5e_txqsq *sq, struct sk_buff *skb, struct mlx5e_tx_wqe **wqe, - u16 *pi) + u16 *pi, + struct mlx5e_tls *tls) { u32 tcp_seq = ntohl(tcp_hdr(skb)->seq); struct sync_info info; @@ -175,12 +176,14 @@ mlx5e_tls_handle_ooo(struct mlx5e_tls_offload_context *context, sq->stats.tls_ooo++; - if (mlx5e_tls_get_sync_data(context, tcp_seq, &info)) + if (mlx5e_tls_get_sync_data(context, tcp_seq, &info)) { /* We might get here if a retransmission reaches the driver * after the relevant record is acked. * It should be safe to drop the packet in this case */ + atomic64_inc(&tls->sw_stats.tx_tls_drop_no_sync_data); goto err_out; + } if (unlikely(info.sync_len < 0)) { u32 payload; @@ -192,21 +195,22 @@ mlx5e_tls_handle_ooo(struct mlx5e_tls_offload_context *context, */ return skb; - netdev_err(skb->dev, - "Can't offload from the middle of an SKB [seq: %X, offload_seq: %X, end_seq: %X]\n", - tcp_seq, tcp_seq + payload + info.sync_len, - tcp_seq + payload); + atomic64_inc(&tls->sw_stats.tx_tls_drop_bypass_required); goto err_out; } - if (unlikely(mlx5e_tls_add_metadata(skb, context->swid))) + if (unlikely(mlx5e_tls_add_metadata(skb, context->swid))) { + atomic64_inc(&tls->sw_stats.tx_tls_drop_metadata); goto err_out; + } headln = skb_transport_offset(skb) + tcp_hdrlen(skb); linear_len += headln + sizeof(info.rcd_sn); nskb = alloc_skb(linear_len, GFP_ATOMIC); - if (unlikely(!nskb)) + if (unlikely(!nskb)) { + atomic64_inc(&tls->sw_stats.tx_tls_drop_resync_alloc); goto err_out; + } context->expected_seq = tcp_seq + skb->len - headln; skb_put(nskb, linear_len); @@ -234,6 +238,7 @@ struct sk_buff *mlx5e_tls_handle_tx_skb(struct net_device *netdev, struct mlx5e_tx_wqe **wqe, u16 *pi) { + struct mlx5e_priv *priv = netdev_priv(netdev); struct mlx5e_tls_offload_context *context; struct tls_context *tls_ctx; u32 expected_seq; @@ -256,11 +261,12 @@ struct sk_buff *mlx5e_tls_handle_tx_skb(struct net_device *netdev, expected_seq = context->expected_seq; if (unlikely(expected_seq != skb_seq)) { - skb = mlx5e_tls_handle_ooo(context, sq, skb, wqe, pi); + skb = mlx5e_tls_handle_ooo(context, sq, skb, wqe, pi, priv->tls); goto out; } if (unlikely(mlx5e_tls_add_metadata(skb, context->swid))) { + atomic64_inc(&priv->tls->sw_stats.tx_tls_drop_metadata); dev_kfree_skb_any(skb); skb = NULL; goto out; diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_stats.c new file mode 100644 index 000000000000..01468ec27446 --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_accel/tls_stats.c @@ -0,0 +1,89 @@ +/* + * Copyright (c) 2018 Mellanox Technologies. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + * + */ + +#include +#include + +#include "en.h" +#include "accel/tls.h" +#include "fpga/sdk.h" +#include "en_accel/tls.h" + +static const struct counter_desc mlx5e_tls_sw_stats_desc[] = { + { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_metadata) }, + { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_resync_alloc) }, + { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_no_sync_data) }, + { MLX5E_DECLARE_STAT(struct mlx5e_tls_sw_stats, tx_tls_drop_bypass_required) }, +}; + +#define MLX5E_READ_CTR_ATOMIC64(ptr, dsc, i) \ + atomic64_read((atomic64_t *)((char *)(ptr) + (dsc)[i].offset)) + +#define NUM_TLS_SW_COUNTERS ARRAY_SIZE(mlx5e_tls_sw_stats_desc) + +int mlx5e_tls_get_count(struct mlx5e_priv *priv) +{ + if (!priv->tls) + return 0; + + return NUM_TLS_SW_COUNTERS; +} + +int mlx5e_tls_get_strings(struct mlx5e_priv *priv, uint8_t *data) +{ + unsigned int i, idx = 0; + + if (!priv->tls) + return 0; + + for (i = 0; i < NUM_TLS_SW_COUNTERS; i++) + strcpy(data + (idx++) * ETH_GSTRING_LEN, + mlx5e_tls_sw_stats_desc[i].format); + + return NUM_TLS_SW_COUNTERS; +} + +int mlx5e_tls_get_stats(struct mlx5e_priv *priv, u64 *data) +{ + int i, idx = 0; + + if (!priv->tls) + return 0; + + for (i = 0; i < NUM_TLS_SW_COUNTERS; i++) + data[idx++] = + MLX5E_READ_CTR_ATOMIC64(&priv->tls->sw_stats, + mlx5e_tls_sw_stats_desc, i); + + return NUM_TLS_SW_COUNTERS; +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c index 5f5f97ee64b2..553eb63753ff 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -4422,12 +4422,16 @@ static void mlx5e_nic_init(struct mlx5_core_dev *mdev, err = mlx5e_ipsec_init(priv); if (err) mlx5_core_err(mdev, "IPSec initialization failed, %d\n", err); + err = mlx5e_tls_init(priv); + if (err) + mlx5_core_err(mdev, "TLS initialization failed, %d\n", err); mlx5e_build_nic_netdev(netdev); mlx5e_vxlan_init(priv); } static void mlx5e_nic_cleanup(struct mlx5e_priv *priv) { + mlx5e_tls_cleanup(priv); mlx5e_ipsec_cleanup(priv); mlx5e_vxlan_cleanup(priv); } diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c index c04cf2b4d838..e17919c0af08 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_stats.c @@ -32,6 +32,7 @@ #include "en.h" #include "en_accel/ipsec.h" +#include "en_accel/tls.h" static const struct counter_desc sw_stats_desc[] = { { MLX5E_DECLARE_STAT(struct mlx5e_sw_stats, rx_packets) }, @@ -1075,6 +1076,22 @@ static void mlx5e_grp_ipsec_update_stats(struct mlx5e_priv *priv) mlx5e_ipsec_update_stats(priv); } +static int mlx5e_grp_tls_get_num_stats(struct mlx5e_priv *priv) +{ + return mlx5e_tls_get_count(priv); +} + +static int mlx5e_grp_tls_fill_strings(struct mlx5e_priv *priv, u8 *data, + int idx) +{ + return idx + mlx5e_tls_get_strings(priv, data + idx * ETH_GSTRING_LEN); +} + +static int mlx5e_grp_tls_fill_stats(struct mlx5e_priv *priv, u64 *data, int idx) +{ + return idx + mlx5e_tls_get_stats(priv, data + idx); +} + static const struct counter_desc rq_stats_desc[] = { { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, packets) }, { MLX5E_DECLARE_RX_STAT(struct mlx5e_rq_stats, bytes) }, @@ -1277,6 +1294,11 @@ const struct mlx5e_stats_grp mlx5e_stats_grps[] = { .fill_stats = mlx5e_grp_ipsec_fill_stats, .update_stats = mlx5e_grp_ipsec_update_stats, }, + { + .get_num_stats = mlx5e_grp_tls_get_num_stats, + .fill_strings = mlx5e_grp_tls_fill_strings, + .fill_stats = mlx5e_grp_tls_fill_stats, + }, { .get_num_stats = mlx5e_grp_channels_get_num_stats, .fill_strings = mlx5e_grp_channels_fill_strings, -- 2.30.2