From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id 73F65A0531; Wed, 29 Jan 2020 11:11:28 +0100 (CET) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id EFF171BFB4; Wed, 29 Jan 2020 11:10:25 +0100 (CET) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by dpdk.org (Postfix) with ESMTP id 614B51BFB2 for ; Wed, 29 Jan 2020 11:10:24 +0100 (CET) Received: from Internal Mail-Server by MTLPINE1 (envelope-from asafp@mellanox.com) with ESMTPS (AES256-SHA encrypted); 29 Jan 2020 12:10:23 +0200 Received: from pegasus07.mtr.labs.mlnx (pegasus07.mtr.labs.mlnx [10.210.16.112]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 00TA9BHR032108; Wed, 29 Jan 2020 12:10:23 +0200 From: Matan Azrad To: dev@dpdk.org, Viacheslav Ovsiienko Cc: Maxime Coquelin Date: Wed, 29 Jan 2020 10:09:07 +0000 Message-Id: <1580292549-27439-12-git-send-email-matan@mellanox.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1580292549-27439-1-git-send-email-matan@mellanox.com> References: <1579539790-3882-1-git-send-email-matan@mellanox.com> <1580292549-27439-1-git-send-email-matan@mellanox.com> Subject: [dpdk-dev] [PATCH v2 11/13] vdpa/mlx5: support live migration X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" Add support for live migration feature by the HW: Create a single Mkey that maps the memory address space of the VHOST live migration log file. Modify VIRTIO_NET_Q object and provide vhost_log_page, dirty_bitmap_mkey, dirty_bitmap_size, dirty_bitmap_addr and dirty_bitmap_dump_enable. Modify VIRTIO_NET_Q object and move state to SUSPEND. Query VIRTIO_NET_Q and get hw_available_idx and hw_used_idx. Signed-off-by: Matan Azrad Acked-by: Viacheslav Ovsiienko --- doc/guides/vdpadevs/features/mlx5.ini | 1 + drivers/vdpa/mlx5/Makefile | 1 + drivers/vdpa/mlx5/meson.build | 1 + drivers/vdpa/mlx5/mlx5_vdpa.c | 44 +++++++++++- drivers/vdpa/mlx5/mlx5_vdpa.h | 55 ++++++++++++++ drivers/vdpa/mlx5/mlx5_vdpa_lm.c | 130 ++++++++++++++++++++++++++++++++++ drivers/vdpa/mlx5/mlx5_vdpa_virtq.c | 7 +- 7 files changed, 236 insertions(+), 3 deletions(-) create mode 100644 drivers/vdpa/mlx5/mlx5_vdpa_lm.c diff --git a/doc/guides/vdpadevs/features/mlx5.ini b/doc/guides/vdpadevs/features/mlx5.ini index e4ee34b..1da9c1b 100644 --- a/doc/guides/vdpadevs/features/mlx5.ini +++ b/doc/guides/vdpadevs/features/mlx5.ini @@ -9,6 +9,7 @@ guest csum = Y host tso4 = Y host tso6 = Y version 1 = Y +log all = Y any layout = Y guest announce = Y mq = Y diff --git a/drivers/vdpa/mlx5/Makefile b/drivers/vdpa/mlx5/Makefile index 2f70a98..4d1f528 100644 --- a/drivers/vdpa/mlx5/Makefile +++ b/drivers/vdpa/mlx5/Makefile @@ -12,6 +12,7 @@ SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_mem.c SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_event.c SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_virtq.c SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_steer.c +SRCS-$(CONFIG_RTE_LIBRTE_MLX5_VDPA_PMD) += mlx5_vdpa_lm.c # Basic CFLAGS. diff --git a/drivers/vdpa/mlx5/meson.build b/drivers/vdpa/mlx5/meson.build index 2849178..2e521b8 100644 --- a/drivers/vdpa/mlx5/meson.build +++ b/drivers/vdpa/mlx5/meson.build @@ -16,6 +16,7 @@ sources = files( 'mlx5_vdpa_event.c', 'mlx5_vdpa_virtq.c', 'mlx5_vdpa_steer.c', + 'mlx5_vdpa_lm.c', ) cflags_options = [ '-std=c11', diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.c b/drivers/vdpa/mlx5/mlx5_vdpa.c index 71189c4..4ce0ba0 100644 --- a/drivers/vdpa/mlx5/mlx5_vdpa.c +++ b/drivers/vdpa/mlx5/mlx5_vdpa.c @@ -19,7 +19,8 @@ (1ULL << VIRTIO_F_ANY_LAYOUT) | \ (1ULL << VIRTIO_NET_F_MQ) | \ (1ULL << VIRTIO_NET_F_GUEST_ANNOUNCE) | \ - (1ULL << VIRTIO_F_ORDER_PLATFORM)) + (1ULL << VIRTIO_F_ORDER_PLATFORM) | \ + (1ULL << VHOST_F_LOG_ALL)) #define MLX5_VDPA_PROTOCOL_FEATURES \ ((1ULL << VHOST_USER_PROTOCOL_F_SLAVE_REQ) | \ @@ -127,6 +128,45 @@ return mlx5_vdpa_virtq_enable(virtq, state); } +static int +mlx5_vdpa_features_set(int vid) +{ + int did = rte_vhost_get_vdpa_device_id(vid); + struct mlx5_vdpa_priv *priv = mlx5_vdpa_find_priv_resource_by_did(did); + uint64_t log_base, log_size; + uint64_t features; + int ret; + + if (priv == NULL) { + DRV_LOG(ERR, "Invalid device id: %d.", did); + return -EINVAL; + } + ret = rte_vhost_get_negotiated_features(vid, &features); + if (ret) { + DRV_LOG(ERR, "Failed to get negotiated features."); + return ret; + } + if (RTE_VHOST_NEED_LOG(features)) { + ret = rte_vhost_get_log_base(vid, &log_base, &log_size); + if (ret) { + DRV_LOG(ERR, "Failed to get log base."); + return ret; + } + ret = mlx5_vdpa_dirty_bitmap_set(priv, log_base, log_size); + if (ret) { + DRV_LOG(ERR, "Failed to set dirty bitmap."); + return ret; + } + DRV_LOG(INFO, "mlx5 vdpa: enabling dirty logging..."); + ret = mlx5_vdpa_logging_enable(priv, 1); + if (ret) { + DRV_LOG(ERR, "Failed t enable dirty logging."); + return ret; + } + } + return 0; +} + static struct rte_vdpa_dev_ops mlx5_vdpa_ops = { .get_queue_num = mlx5_vdpa_get_queue_num, .get_features = mlx5_vdpa_get_vdpa_features, @@ -134,7 +174,7 @@ .dev_conf = NULL, .dev_close = NULL, .set_vring_state = mlx5_vdpa_set_vring_state, - .set_features = NULL, + .set_features = mlx5_vdpa_features_set, .migration_done = NULL, .get_vfio_group_fd = NULL, .get_vfio_device_fd = NULL, diff --git a/drivers/vdpa/mlx5/mlx5_vdpa.h b/drivers/vdpa/mlx5/mlx5_vdpa.h index af78ea1..70264e4 100644 --- a/drivers/vdpa/mlx5/mlx5_vdpa.h +++ b/drivers/vdpa/mlx5/mlx5_vdpa.h @@ -244,4 +244,59 @@ int mlx5_vdpa_event_qp_create(struct mlx5_vdpa_priv *priv, uint16_t desc_n, */ int mlx5_vdpa_steer_setup(struct mlx5_vdpa_priv *priv); +/** + * Enable\Disable live migration logging. + * + * @param[in] priv + * The vdpa driver private structure. + * @param[in] enable + * Set for enable, unset for disable. + * + * @return + * 0 on success, a negative value otherwise. + */ +int mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable); + +/** + * Set dirty bitmap logging to allow live migration. + * + * @param[in] priv + * The vdpa driver private structure. + * @param[in] log_base + * Vhost log base. + * @param[in] log_size + * Vhost log size. + * + * @return + * 0 on success, a negative value otherwise. + */ +int mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base, + uint64_t log_size); + +/** + * Log all virtqs information for live migration. + * + * @param[in] priv + * The vdpa driver private structure. + * @param[in] enable + * Set for enable, unset for disable. + * + * @return + * 0 on success, a negative value otherwise. + */ +int mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv); + +/** + * Modify virtq state to be ready or suspend. + * + * @param[in] virtq + * The vdpa driver private virtq structure. + * @param[in] state + * Set for ready, otherwise suspend. + * + * @return + * 0 on success, a negative value otherwise. + */ +int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state); + #endif /* RTE_PMD_MLX5_VDPA_H_ */ diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_lm.c b/drivers/vdpa/mlx5/mlx5_vdpa_lm.c new file mode 100644 index 0000000..cfeec5f --- /dev/null +++ b/drivers/vdpa/mlx5/mlx5_vdpa_lm.c @@ -0,0 +1,130 @@ +/* SPDX-License-Identifier: BSD-3-Clause + * Copyright 2019 Mellanox Technologies, Ltd + */ +#include +#include + +#include "mlx5_vdpa_utils.h" +#include "mlx5_vdpa.h" + + +int +mlx5_vdpa_logging_enable(struct mlx5_vdpa_priv *priv, int enable) +{ + struct mlx5_devx_virtq_attr attr = { + .type = MLX5_VIRTQ_MODIFY_TYPE_DIRTY_BITMAP_DUMP_ENABLE, + .dirty_bitmap_dump_enable = enable, + }; + struct mlx5_vdpa_virtq *virtq; + + SLIST_FOREACH(virtq, &priv->virtq_list, next) { + attr.queue_index = virtq->index; + if (mlx5_devx_cmd_modify_virtq(virtq->virtq, &attr)) { + DRV_LOG(ERR, "Failed to modify virtq %d logging.", + virtq->index); + return -1; + } + } + return 0; +} + +int +mlx5_vdpa_dirty_bitmap_set(struct mlx5_vdpa_priv *priv, uint64_t log_base, + uint64_t log_size) +{ + struct mlx5_devx_mkey_attr mkey_attr = { + .addr = (uintptr_t)log_base, + .size = log_size, + .pd = priv->pdn, + .pg_access = 1, + .klm_array = NULL, + .klm_num = 0, + }; + struct mlx5_devx_virtq_attr attr = { + .type = MLX5_VIRTQ_MODIFY_TYPE_DIRTY_BITMAP_PARAMS, + .dirty_bitmap_addr = log_base, + .dirty_bitmap_size = log_size, + }; + struct mlx5_vdpa_query_mr *mr = rte_malloc(__func__, sizeof(*mr), 0); + struct mlx5_vdpa_virtq *virtq; + + if (!mr) { + DRV_LOG(ERR, "Failed to allocate mem for lm mr."); + return -1; + } + mr->umem = mlx5_glue->devx_umem_reg(priv->ctx, + (void *)(uintptr_t)log_base, + log_size, IBV_ACCESS_LOCAL_WRITE); + if (!mr->umem) { + DRV_LOG(ERR, "Failed to register umem for lm mr."); + goto err; + } + mkey_attr.umem_id = mr->umem->umem_id; + mr->mkey = mlx5_devx_cmd_mkey_create(priv->ctx, &mkey_attr); + if (!mr->mkey) { + DRV_LOG(ERR, "Failed to create Mkey for lm."); + goto err; + } + attr.dirty_bitmap_mkey = mr->mkey->id; + SLIST_FOREACH(virtq, &priv->virtq_list, next) { + attr.queue_index = virtq->index; + if (mlx5_devx_cmd_modify_virtq(virtq->virtq, &attr)) { + DRV_LOG(ERR, "Failed to modify virtq %d for lm.", + virtq->index); + goto err; + } + } + mr->is_indirect = 0; + SLIST_INSERT_HEAD(&priv->mr_list, mr, next); + return 0; +err: + if (mr->mkey) + mlx5_devx_cmd_destroy(mr->mkey); + if (mr->umem) + mlx5_glue->devx_umem_dereg(mr->umem); + rte_free(mr); + return -1; +} + +#define MLX5_VDPA_USED_RING_LEN(size) \ + ((size) * sizeof(struct vring_used_elem) + sizeof(uint16_t) * 3) + +int +mlx5_vdpa_lm_log(struct mlx5_vdpa_priv *priv) +{ + struct mlx5_devx_virtq_attr attr = {0}; + struct mlx5_vdpa_virtq *virtq; + uint64_t features; + int ret = rte_vhost_get_negotiated_features(priv->vid, &features); + + if (ret) { + DRV_LOG(ERR, "Failed to get negotiated features."); + return -1; + } + if (RTE_VHOST_NEED_LOG(features)) { + SLIST_FOREACH(virtq, &priv->virtq_list, next) { + ret = mlx5_vdpa_virtq_modify(virtq, 0); + if (ret) + return -1; + if (mlx5_devx_cmd_query_virtq(virtq->virtq, &attr)) { + DRV_LOG(ERR, "Failed to query virtq %d.", + virtq->index); + return -1; + } + DRV_LOG(INFO, "Query vid %d vring %d: hw_available_idx=" + "%d, hw_used_index=%d", priv->vid, virtq->index, + attr.hw_available_index, attr.hw_used_index); + ret = rte_vhost_set_vring_base(priv->vid, virtq->index, + attr.hw_available_index, + attr.hw_used_index); + if (ret) { + DRV_LOG(ERR, "Failed to set virtq %d base.", + virtq->index); + return -1; + } + rte_vhost_log_used_vring(priv->vid, virtq->index, 0, + MLX5_VDPA_USED_RING_LEN(virtq->vq_size)); + } + } + return 0; +} diff --git a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c index 91347e9..af058a1 100644 --- a/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c +++ b/drivers/vdpa/mlx5/mlx5_vdpa_virtq.c @@ -112,7 +112,7 @@ priv->features = 0; } -static int +int mlx5_vdpa_virtq_modify(struct mlx5_vdpa_virtq *virtq, int state) { struct mlx5_devx_virtq_attr attr = { @@ -253,6 +253,11 @@ if (mlx5_vdpa_virtq_modify(virtq, 1)) goto error; virtq->enable = 1; + virtq->priv = priv; + /* Be sure notifications are not missed during configuration. */ + claim_zero(rte_vhost_enable_guest_notification(priv->vid, index, 1)); + rte_write32(virtq->index, priv->virtq_db_addr); + /* Setup doorbell mapping. */ virtq->intr_handle.fd = vq.kickfd; virtq->intr_handle.type = RTE_INTR_HANDLE_EXT; if (rte_intr_callback_register(&virtq->intr_handle, -- 1.8.3.1