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Wed, 21 Aug 2019 00:23:41 +0000 From: Haiyang Zhang To: "sashal@kernel.org" , "davem@davemloft.net" , "saeedm@mellanox.com" , "leon@kernel.org" , "eranbe@mellanox.com" , "lorenzo.pieralisi@arm.com" , "bhelgaas@google.com" , "linux-pci@vger.kernel.org" , "linux-hyperv@vger.kernel.org" , "netdev@vger.kernel.org" CC: Haiyang Zhang , KY Srinivasan , Stephen Hemminger , "linux-kernel@vger.kernel.org" Subject: [PATCH net-next,v3, 6/6] net/mlx5e: Add mlx5e HV VHCA stats agent Thread-Topic: [PATCH net-next,v3, 6/6] net/mlx5e: Add mlx5e HV VHCA stats agent Thread-Index: AQHVV7av9jr7MS48YkejvVIIdNN5EA== Date: Wed, 21 Aug 2019 00:23:41 +0000 Message-ID: <1566346948-69497-7-git-send-email-haiyangz@microsoft.com> References: <1566346948-69497-1-git-send-email-haiyangz@microsoft.com> In-Reply-To: <1566346948-69497-1-git-send-email-haiyangz@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: MWHPR02CA0034.namprd02.prod.outlook.com (2603:10b6:301:60::23) To DM6PR21MB1242.namprd21.prod.outlook.com (2603:10b6:5:169::22) authentication-results: spf=none (sender IP is ) smtp.mailfrom=lkmlhyz@microsoft.com; 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received-spf: None (protection.outlook.com: microsoft.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: INTJ2w6CjS5vTmz6fxk5O9TrHIMiLtHxnLDJ0hO7hMf1Lr+ttwTILtj3GVnbDDcH9MvNseqi4x5cJAj4auwrONMMLPnt08kkWTKvbK0E/xIVVDwXgq2VivOEGKD6MYiWMu4riFSt0zhMLzdSjmaNsIAC68IbLU8L3mhdL/W+v9WbMjuvSqMC56sz0jRztn1dCFPwggqNWmk57gti00lEx89WMOlExJpsccIIktxG4/EQ+FhZDpmjNGzRbKBhDJ95R9xnSAVXzacvoUvt/KLll2dZMdg8+UavFpQkTiOYGroEiM/9aeZ49k1tDupTq4JX0E4lkMm5wC6/Y2hd9Td+Fb+FT7eq/JiH+0pJkrYn+cBb7ZVnYswsVHF3hT1+3yTpdWCiJ4f6e0iSqDnonl02lZ1nijl830z5dcx5Kf3kBP4= Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: microsoft.com X-MS-Exchange-CrossTenant-Network-Message-Id: 2be0adb0-564b-44c7-3b05-08d725cdd174 X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Aug 2019 00:23:41.0422 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 72f988bf-86f1-41af-91ab-2d7cd011db47 X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: dF3nuxBd6IbRwyOGOhB7ZvAUQI34O1UrcecT474NI8Ut3B+xmUag9WoDJ/bVF5K+ml+PWjSOMiEgwySxtbWGQg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR21MB1450 Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Eran Ben Elisha HV VHCA stats agent is responsible on running a preiodic rx/tx packets/bytes stats update. Currently the supported format is version MLX5_HV_VHCA_STATS_VERSION. Block ID 1 is dedicated for statistics data transfer from the VF to the PF. The reporter fetch the statistics data from all opened channels, fill it in a buffer and send it to mlx5_hv_vhca_write_agent. As the stats layer should include some metadata per block (sequence and offset), the HV VHCA layer shall modify the buffer before actually send it over block 1. Signed-off-by: Eran Ben Elisha Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/Makefile | 1 + drivers/net/ethernet/mellanox/mlx5/core/en.h | 13 ++ .../ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c | 162 +++++++++++++++++= ++++ .../ethernet/mellanox/mlx5/core/en/hv_vhca_stats.h | 25 ++++ drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 3 + .../net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h | 1 + 6 files changed, 205 insertions(+) create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stat= s.c create mode 100644 drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stat= s.h diff --git a/drivers/net/ethernet/mellanox/mlx5/core/Makefile b/drivers/net= /ethernet/mellanox/mlx5/core/Makefile index fc59a40..a889a38 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/Makefile +++ b/drivers/net/ethernet/mellanox/mlx5/core/Makefile @@ -36,6 +36,7 @@ mlx5_core-$(CONFIG_MLX5_CORE_EN_DCB) +=3D en_dcbnl.o en/p= ort_buffer.o mlx5_core-$(CONFIG_MLX5_ESWITCH) +=3D en_rep.o en_tc.o en/tc_tun.o lib= /port_tun.o lag_mp.o \ lib/geneve.o en/tc_tun_vxlan.o en/tc_tun_gre.o \ en/tc_tun_geneve.o +mlx5_core-$(CONFIG_PCI_HYPERV_INTERFACE) +=3D en/hv_vhca_stats.o =20 # # Core extra diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/eth= ernet/mellanox/mlx5/core/en.h index 8fc5107..4a8008b 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h @@ -54,6 +54,7 @@ #include "mlx5_core.h" #include "en_stats.h" #include "en/fs.h" +#include "lib/hv_vhca.h" =20 extern const struct net_device_ops mlx5e_netdev_ops; struct page_pool; @@ -777,6 +778,15 @@ struct mlx5e_modify_sq_param { int rl_index; }; =20 +#if IS_ENABLED(CONFIG_PCI_HYPERV_INTERFACE) +struct mlx5e_hv_vhca_stats_agent { + struct mlx5_hv_vhca_agent *agent; + struct delayed_work work; + u16 delay; + void *buf; +}; +#endif + struct mlx5e_xsk { /* UMEMs are stored separately from channels, because we don't want to * lose them when channels are recreated. The kernel also stores UMEMs, @@ -848,6 +858,9 @@ struct mlx5e_priv { struct devlink_health_reporter *tx_reporter; struct devlink_health_reporter *rx_reporter; struct mlx5e_xsk xsk; +#if IS_ENABLED(CONFIG_PCI_HYPERV_INTERFACE) + struct mlx5e_hv_vhca_stats_agent stats_agent; +#endif }; =20 struct mlx5e_profile { diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c b/d= rivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c new file mode 100644 index 0000000..c37b4ac --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.c @@ -0,0 +1,162 @@ +// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB +// Copyright (c) 2018 Mellanox Technologies + +#include "en.h" +#include "en/hv_vhca_stats.h" +#include "lib/hv_vhca.h" +#include "lib/hv.h" + +struct mlx5e_hv_vhca_per_ring_stats { + u64 rx_packets; + u64 rx_bytes; + u64 tx_packets; + u64 tx_bytes; +}; + +static void +mlx5e_hv_vhca_fill_ring_stats(struct mlx5e_priv *priv, int ch, + struct mlx5e_hv_vhca_per_ring_stats *data) +{ + struct mlx5e_channel_stats *stats; + int tc; + + stats =3D &priv->channel_stats[ch]; + data->rx_packets =3D stats->rq.packets; + data->rx_bytes =3D stats->rq.bytes; + + for (tc =3D 0; tc < priv->max_opened_tc; tc++) { + data->tx_packets +=3D stats->sq[tc].packets; + data->tx_bytes +=3D stats->sq[tc].bytes; + } +} + +static void mlx5e_hv_vhca_fill_stats(struct mlx5e_priv *priv, u64 *data, + int buf_len) +{ + int ch, i =3D 0; + + for (ch =3D 0; ch < priv->max_nch; ch++) { + u64 *buf =3D data + i; + + if (WARN_ON_ONCE(buf + + sizeof(struct mlx5e_hv_vhca_per_ring_stats) > + data + buf_len)) + return; + + mlx5e_hv_vhca_fill_ring_stats(priv, ch, + (struct mlx5e_hv_vhca_per_ring_stats *)buf); + i +=3D sizeof(struct mlx5e_hv_vhca_per_ring_stats) / sizeof(u64); + } +} + +static int mlx5e_hv_vhca_stats_buf_size(struct mlx5e_priv *priv) +{ + return (sizeof(struct mlx5e_hv_vhca_per_ring_stats) * + priv->max_nch); +} + +static void mlx5e_hv_vhca_stats_work(struct work_struct *work) +{ + struct mlx5e_hv_vhca_stats_agent *sagent; + struct mlx5_hv_vhca_agent *agent; + struct delayed_work *dwork; + struct mlx5e_priv *priv; + int buf_len, rc; + void *buf; + + dwork =3D to_delayed_work(work); + sagent =3D container_of(dwork, struct mlx5e_hv_vhca_stats_agent, work); + priv =3D container_of(sagent, struct mlx5e_priv, stats_agent); + buf_len =3D mlx5e_hv_vhca_stats_buf_size(priv); + agent =3D sagent->agent; + buf =3D sagent->buf; + + memset(buf, 0, buf_len); + mlx5e_hv_vhca_fill_stats(priv, buf, buf_len); + + rc =3D mlx5_hv_vhca_agent_write(agent, buf, buf_len); + if (rc) { + mlx5_core_err(priv->mdev, + "%s: Failed to write stats, err =3D %d\n", + __func__, rc); + return; + } + + if (sagent->delay) + queue_delayed_work(priv->wq, &sagent->work, sagent->delay); +} + +enum { + MLX5_HV_VHCA_STATS_VERSION =3D 1, + MLX5_HV_VHCA_STATS_UPDATE_ONCE =3D 0xFFFF, +}; + +static void mlx5e_hv_vhca_stats_control(struct mlx5_hv_vhca_agent *agent, + struct mlx5_hv_vhca_control_block *block) +{ + struct mlx5e_hv_vhca_stats_agent *sagent; + struct mlx5e_priv *priv; + + priv =3D mlx5_hv_vhca_agent_priv(agent); + sagent =3D &priv->stats_agent; + + block->version =3D MLX5_HV_VHCA_STATS_VERSION; + block->rings =3D priv->max_nch; + + if (!block->command) { + cancel_delayed_work_sync(&priv->stats_agent.work); + return; + } + + sagent->delay =3D block->command =3D=3D MLX5_HV_VHCA_STATS_UPDATE_ONCE ? = 0 : + msecs_to_jiffies(block->command * 100); + + queue_delayed_work(priv->wq, &sagent->work, sagent->delay); +} + +static void mlx5e_hv_vhca_stats_cleanup(struct mlx5_hv_vhca_agent *agent) +{ + struct mlx5e_priv *priv =3D mlx5_hv_vhca_agent_priv(agent); + + cancel_delayed_work_sync(&priv->stats_agent.work); +} + +int mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv) +{ + int buf_len =3D mlx5e_hv_vhca_stats_buf_size(priv); + struct mlx5_hv_vhca_agent *agent; + + priv->stats_agent.buf =3D kvzalloc(buf_len, GFP_KERNEL); + if (!priv->stats_agent.buf) + return -ENOMEM; + + agent =3D mlx5_hv_vhca_agent_create(priv->mdev->hv_vhca, + MLX5_HV_VHCA_AGENT_STATS, + mlx5e_hv_vhca_stats_control, NULL, + mlx5e_hv_vhca_stats_cleanup, + priv); + + if (IS_ERR_OR_NULL(agent)) { + if (IS_ERR(agent)) + netdev_warn(priv->netdev, + "Failed to create hv vhca stats agent, err =3D %ld\n", + PTR_ERR(agent)); + + kfree(priv->stats_agent.buf); + return IS_ERR_OR_NULL(agent); + } + + priv->stats_agent.agent =3D agent; + INIT_DELAYED_WORK(&priv->stats_agent.work, mlx5e_hv_vhca_stats_work); + + return 0; +} + +void mlx5e_hv_vhca_stats_destroy(struct mlx5e_priv *priv) +{ + if (IS_ERR_OR_NULL(priv->stats_agent.agent)) + return; + + mlx5_hv_vhca_agent_destroy(priv->stats_agent.agent); + kfree(priv->stats_agent.buf); +} diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.h b/d= rivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.h new file mode 100644 index 0000000..664463f --- /dev/null +++ b/drivers/net/ethernet/mellanox/mlx5/core/en/hv_vhca_stats.h @@ -0,0 +1,25 @@ +/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ +/* Copyright (c) 2019 Mellanox Technologies. */ + +#ifndef __MLX5_EN_STATS_VHCA_H__ +#define __MLX5_EN_STATS_VHCA_H__ +#include "en.h" + +#if IS_ENABLED(CONFIG_PCI_HYPERV_INTERFACE) + +int mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv); +void mlx5e_hv_vhca_stats_destroy(struct mlx5e_priv *priv); + +#else + +static inline int mlx5e_hv_vhca_stats_create(struct mlx5e_priv *priv) +{ + return 0; +} + +static inline void mlx5e_hv_vhca_stats_destroy(struct mlx5e_priv *priv) +{ +} +#endif + +#endif /* __MLX5_EN_STATS_VHCA_H__ */ diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/ne= t/ethernet/mellanox/mlx5/core/en_main.c index 5721d3d..fac8455 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c @@ -64,6 +64,7 @@ #include "en/xsk/setup.h" #include "en/xsk/rx.h" #include "en/xsk/tx.h" +#include "en/hv_vhca_stats.h" =20 =20 bool mlx5e_check_fragmented_striding_rq_cap(struct mlx5_core_dev *mdev) @@ -5103,6 +5104,7 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv) if (mlx5e_monitor_counter_supported(priv)) mlx5e_monitor_counter_init(priv); =20 + mlx5e_hv_vhca_stats_create(priv); if (netdev->reg_state !=3D NETREG_REGISTERED) return; #ifdef CONFIG_MLX5_CORE_EN_DCB @@ -5135,6 +5137,7 @@ static void mlx5e_nic_disable(struct mlx5e_priv *priv= ) =20 queue_work(priv->wq, &priv->set_rx_mode_work); =20 + mlx5e_hv_vhca_stats_destroy(priv); if (mlx5e_monitor_counter_supported(priv)) mlx5e_monitor_counter_cleanup(priv); =20 diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h b/driver= s/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h index 984e7ad..4bad6a5 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h +++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/hv_vhca.h @@ -13,6 +13,7 @@ =20 enum mlx5_hv_vhca_agent_type { MLX5_HV_VHCA_AGENT_CONTROL =3D 0, + MLX5_HV_VHCA_AGENT_STATS =3D 1, MLX5_HV_VHCA_AGENT_MAX =3D 32, }; =20 --=20 1.8.3.1