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https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
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0fe963d6fc
There are a few conditions under which the hardware VQs need a full teardown and setup: - VQ size changed to something else than default value. Hardware VQ size modification is not supported. - User turns off certain device features: mergeable buffers, checksum virtio 1.0 compliance. In these cases, the TIR and RQT need to be re-created. Add a needs_teardown configuration variable and set it when detecting the above scenarios. On next DRIVER_OK, the resources will be torn down first. Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com> Acked-by: Eugenio Pérez <eperezma@redhat.com> Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com> Message-Id: <20240626-stage-vdpa-vq-precreate-v2-22-560c491078df@nvidia.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
120 lines
3.1 KiB
C
120 lines
3.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
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/* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */
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#ifndef __MLX5_VNET_H__
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#define __MLX5_VNET_H__
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#include "mlx5_vdpa.h"
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#define to_mlx5_vdpa_ndev(__mvdev) \
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container_of(__mvdev, struct mlx5_vdpa_net, mvdev)
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#define to_mvdev(__vdev) container_of((__vdev), struct mlx5_vdpa_dev, vdev)
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struct mlx5_vdpa_net_resources {
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u32 tisn;
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u32 tdn;
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u32 tirn;
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u32 rqtn;
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bool valid;
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struct dentry *tirn_dent;
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};
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#define MLX5V_MACVLAN_SIZE 256
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static inline u16 key2vid(u64 key)
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{
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return (u16)(key >> 48) & 0xfff;
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}
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#define MLX5_VDPA_IRQ_NAME_LEN 32
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struct mlx5_vdpa_irq_pool_entry {
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struct msi_map map;
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bool used;
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char name[MLX5_VDPA_IRQ_NAME_LEN];
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void *dev_id;
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};
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struct mlx5_vdpa_irq_pool {
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int num_ent;
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struct mlx5_vdpa_irq_pool_entry *entries;
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};
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struct mlx5_vdpa_net {
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struct mlx5_vdpa_dev mvdev;
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struct mlx5_vdpa_net_resources res;
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struct virtio_net_config config;
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struct mlx5_vdpa_virtqueue *vqs;
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struct vdpa_callback *event_cbs;
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/* Serialize vq resources creation and destruction. This is required
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* since memory map might change and we need to destroy and create
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* resources while driver in operational.
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*/
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struct rw_semaphore reslock;
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struct mlx5_flow_table *rxft;
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struct dentry *rx_dent;
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struct dentry *rx_table_dent;
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bool setup;
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bool needs_teardown;
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u32 cur_num_vqs;
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u32 rqt_size;
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bool nb_registered;
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struct notifier_block nb;
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struct vdpa_callback config_cb;
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struct mlx5_vdpa_wq_ent cvq_ent;
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struct hlist_head macvlan_hash[MLX5V_MACVLAN_SIZE];
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struct mlx5_vdpa_irq_pool irqp;
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struct dentry *debugfs;
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u32 umem_1_buffer_param_a;
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u32 umem_1_buffer_param_b;
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u32 umem_2_buffer_param_a;
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u32 umem_2_buffer_param_b;
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u32 umem_3_buffer_param_a;
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u32 umem_3_buffer_param_b;
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};
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struct mlx5_vdpa_counter {
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struct mlx5_fc *counter;
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struct dentry *dent;
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struct mlx5_core_dev *mdev;
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};
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struct macvlan_node {
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struct hlist_node hlist;
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struct mlx5_flow_handle *ucast_rule;
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struct mlx5_flow_handle *mcast_rule;
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u64 macvlan;
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struct mlx5_vdpa_net *ndev;
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bool tagged;
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#if defined(CONFIG_MLX5_VDPA_STEERING_DEBUG)
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struct dentry *dent;
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struct mlx5_vdpa_counter ucast_counter;
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struct mlx5_vdpa_counter mcast_counter;
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#endif
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};
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void mlx5_vdpa_add_debugfs(struct mlx5_vdpa_net *ndev);
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void mlx5_vdpa_remove_debugfs(struct mlx5_vdpa_net *ndev);
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void mlx5_vdpa_add_rx_flow_table(struct mlx5_vdpa_net *ndev);
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void mlx5_vdpa_remove_rx_flow_table(struct mlx5_vdpa_net *ndev);
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void mlx5_vdpa_add_tirn(struct mlx5_vdpa_net *ndev);
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void mlx5_vdpa_remove_tirn(struct mlx5_vdpa_net *ndev);
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#if defined(CONFIG_MLX5_VDPA_STEERING_DEBUG)
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void mlx5_vdpa_add_rx_counters(struct mlx5_vdpa_net *ndev,
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struct macvlan_node *node);
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void mlx5_vdpa_remove_rx_counters(struct mlx5_vdpa_net *ndev,
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struct macvlan_node *node);
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#else
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static inline void mlx5_vdpa_add_rx_counters(struct mlx5_vdpa_net *ndev,
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struct macvlan_node *node) {}
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static inline void mlx5_vdpa_remove_rx_counters(struct mlx5_vdpa_net *ndev,
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struct macvlan_node *node) {}
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#endif
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#endif /* __MLX5_VNET_H__ */
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