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net/mlx5: Support querying max VFs from device

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For ECPF with eswitch manager privilege, query the host max VF count
by querying the device using query_functions command.

With this enhancement:
1. flow steering entries are created only for valid vports based on
   the max VF count of the PF.
2. Driver only queries cap of valid vport.

Eswitch requires the max VFs when doing initialization, so do sr-iov
init before eswitch init.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Bodong Wang
2019-06-10 23:38:19 +00:00
committed by Saeed Mahameed
parent 10ee82cedb
commit 86eec50bea
4 changed files with 36 additions and 17 deletions
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7
include/linux/mlx5/driver.h
View File

@@ -470,6 +470,7 @@ struct mlx5_core_sriov {
struct mlx5_vf_context *vfs_ctx;
int num_vfs;
int enabled_vfs;
u16 max_vfs;
};
struct mlx5_fc_stats {
@@ -1103,13 +1104,9 @@ static inline bool mlx5_ecpf_vport_exists(struct mlx5_core_dev *dev)
return mlx5_core_is_pf(dev) && MLX5_CAP_ESW(dev, ecpf_vport_exists);
}
#define MLX5_HOST_PF_MAX_VFS (127u)
static inline u16 mlx5_core_max_vfs(struct mlx5_core_dev *dev)
{
if (mlx5_core_is_ecpf_esw_manager(dev))
return MLX5_HOST_PF_MAX_VFS;
else
return pci_sriov_get_totalvfs(dev->pdev);
return dev->priv.sriov.max_vfs;
}
static inline int mlx5_get_gid_table_len(u16 param)

2
include/linux/mlx5/mlx5_ifc.h
View File

@@ -9711,7 +9711,7 @@ struct mlx5_ifc_host_params_context_bits {
u8 reserved_at_8[0x8];
u8 host_num_of_vfs[0x10];
u8 reserved_at_20[0x10];
u8 host_total_vfs[0x10];
u8 host_pci_bus[0x10];
u8 reserved_at_40[0x10];