Skip to content

Commit

Permalink
net/mlx5: Add host params change event
Browse files Browse the repository at this point in the history
In Embedded CPU (EC) configurations, the EC driver needs to know when
the number of virtual functions change on the corresponding PF at the
host side. This is required so the EC driver can create or destroy
representor net devices that represent the VFs ports.

Whenever a change in the number of VFs occurs, firmware will generate an
event towards the EC which will trigger a work to complete the rest of
the handling. The specifics of the handling will be introduced in a
downstream patch.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
  • Loading branch information
Bodong Wang authored and Saeed Mahameed committed Feb 14, 2019
1 parent c3a4e9f commit 7f0d11c
Show file tree
Hide file tree
Showing 4 changed files with 12 additions and 0 deletions.
3 changes: 3 additions & 0 deletions drivers/net/ethernet/mellanox/mlx5/core/eq.c
Original file line number Diff line number Diff line change
Expand Up @@ -530,6 +530,9 @@ static u64 gather_async_events_mask(struct mlx5_core_dev *dev)
if (MLX5_CAP_GEN(dev, max_num_of_monitor_counters))
async_event_mask |= (1ull << MLX5_EVENT_TYPE_MONITOR_COUNTER);

if (mlx5_core_is_ecpf_esw_manager(dev))
async_event_mask |= (1ull << MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE);

return async_event_mask;
}

Expand Down
2 changes: 2 additions & 0 deletions drivers/net/ethernet/mellanox/mlx5/core/events.c
Original file line number Diff line number Diff line change
Expand Up @@ -103,6 +103,8 @@ static const char *eqe_type_str(u8 type)
return "MLX5_EVENT_TYPE_STALL_EVENT";
case MLX5_EVENT_TYPE_CMD:
return "MLX5_EVENT_TYPE_CMD";
case MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE:
return "MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE";
case MLX5_EVENT_TYPE_PAGE_REQUEST:
return "MLX5_EVENT_TYPE_PAGE_REQUEST";
case MLX5_EVENT_TYPE_PAGE_FAULT:
Expand Down
2 changes: 2 additions & 0 deletions include/linux/mlx5/device.h
Original file line number Diff line number Diff line change
Expand Up @@ -342,6 +342,8 @@ enum mlx5_event {
MLX5_EVENT_TYPE_PAGE_FAULT = 0xc,
MLX5_EVENT_TYPE_NIC_VPORT_CHANGE = 0xd,

MLX5_EVENT_TYPE_HOST_PARAMS_CHANGE = 0xe,

MLX5_EVENT_TYPE_DCT_DRAINED = 0x1c,

MLX5_EVENT_TYPE_FPGA_ERROR = 0x20,
Expand Down
5 changes: 5 additions & 0 deletions include/linux/mlx5/driver.h
Original file line number Diff line number Diff line change
Expand Up @@ -1083,6 +1083,11 @@ static inline bool mlx5_core_is_ecpf(struct mlx5_core_dev *dev)
return dev->caps.embedded_cpu;
}

static inline bool mlx5_core_is_ecpf_esw_manager(struct mlx5_core_dev *dev)
{
return dev->caps.embedded_cpu && MLX5_CAP_GEN(dev, eswitch_manager);
}

#define MLX5_TOTAL_VPORTS(mdev) (1 + pci_sriov_get_totalvfs((mdev)->pdev))
#define MLX5_VPORT_MANAGER(mdev) \
(MLX5_CAP_GEN(mdev, vport_group_manager) && \
Expand Down

0 comments on commit 7f0d11c

Please sign in to comment.