Commit f3196bb0 authored by Parav Pandit's avatar Parav Pandit Committed by Saeed Mahameed
Browse files

net/mlx5: Introduce vhca state event notifier 



vhca state events indicates change in the state of the vhca that may
occur due to a SF allocation, deallocation or enabling/disabling the
SF HCA.

Introduce vhca state event handler which will be used by SF devlink
port manager and SF hardware id allocator in subsequent patches
to act on the event.

This enables single entity to subscribe, query and rearm the event
for a function.

Signed-off-by: default avatarParav Pandit <parav@nvidia.com>
Reviewed-by: default avatarVu Pham <vuhuong@nvidia.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@nvidia.com>
parent a556dded

drivers/net/ethernet/mellanox/mlx5/core/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -203,3 +203,12 @@ config MLX5_SW_STEERING 
	default y

	help

	Build support for software-managed steering in the NIC.



config MLX5_SF

	bool "Mellanox Technologies subfunction device support using auxiliary device"

	depends on MLX5_CORE && MLX5_CORE_EN

	default n

	help

	Build support for subfuction device in the NIC. A Mellanox subfunction

	device can support RDMA, netdevice and vdpa device.

	It is similar to a SRIOV VF but it doesn't require SRIOV support.

drivers/net/ethernet/mellanox/mlx5/core/Makefile

+4 −0
Original line number Diff line number Diff line
@@ -86,3 +86,7 @@ mlx5_core-$(CONFIG_MLX5_SW_STEERING) += steering/dr_domain.o steering/dr_table.o 
					steering/dr_ste_v0.o \

					steering/dr_cmd.o steering/dr_fw.o \

					steering/dr_action.o steering/fs_dr.o

#

# SF device

#

mlx5_core-$(CONFIG_MLX5_SF) += sf/vhca_event.o

drivers/net/ethernet/mellanox/mlx5/core/cmd.c

+4 −0
Original line number Diff line number Diff line
@@ -464,6 +464,8 @@ static int mlx5_internal_err_ret_value(struct mlx5_core_dev *dev, u16 op, 
	case MLX5_CMD_OP_ALLOC_MEMIC:

	case MLX5_CMD_OP_MODIFY_XRQ:

	case MLX5_CMD_OP_RELEASE_XRQ_ERROR:

	case MLX5_CMD_OP_QUERY_VHCA_STATE:

	case MLX5_CMD_OP_MODIFY_VHCA_STATE:

		*status = MLX5_DRIVER_STATUS_ABORTED;

		*synd = MLX5_DRIVER_SYND;

		return -EIO;
@@ -657,6 +659,8 @@ const char *mlx5_command_str(int command) 
	MLX5_COMMAND_STR_CASE(DESTROY_UMEM);

	MLX5_COMMAND_STR_CASE(RELEASE_XRQ_ERROR);

	MLX5_COMMAND_STR_CASE(MODIFY_XRQ);

	MLX5_COMMAND_STR_CASE(QUERY_VHCA_STATE);

	MLX5_COMMAND_STR_CASE(MODIFY_VHCA_STATE);

	default: return "unknown command opcode";

	}

}

drivers/net/ethernet/mellanox/mlx5/core/eq.c

+3 −0
Original line number Diff line number Diff line
@@ -595,6 +595,9 @@ static void gather_async_events_mask(struct mlx5_core_dev *dev, u64 mask[4]) 
		async_event_mask |=

			(1ull << MLX5_EVENT_TYPE_ESW_FUNCTIONS_CHANGED);



	if (MLX5_CAP_GEN_MAX(dev, vhca_state))

		async_event_mask |= (1ull << MLX5_EVENT_TYPE_VHCA_STATE_CHANGE);



	mask[0] = async_event_mask;



	if (MLX5_CAP_GEN(dev, event_cap))

drivers/net/ethernet/mellanox/mlx5/core/events.c

+7 −0
Original line number Diff line number Diff line
@@ -110,6 +110,8 @@ static const char *eqe_type_str(u8 type) 
		return "MLX5_EVENT_TYPE_CMD";

	case MLX5_EVENT_TYPE_ESW_FUNCTIONS_CHANGED:

		return "MLX5_EVENT_TYPE_ESW_FUNCTIONS_CHANGED";

	case MLX5_EVENT_TYPE_VHCA_STATE_CHANGE:

		return "MLX5_EVENT_TYPE_VHCA_STATE_CHANGE";

	case MLX5_EVENT_TYPE_PAGE_REQUEST:

		return "MLX5_EVENT_TYPE_PAGE_REQUEST";

	case MLX5_EVENT_TYPE_PAGE_FAULT:
@@ -403,3 +405,8 @@ int mlx5_notifier_call_chain(struct mlx5_events *events, unsigned int event, voi 
{

	return atomic_notifier_call_chain(&events->nh, event, data);

}



void mlx5_events_work_enqueue(struct mlx5_core_dev *dev, struct work_struct *work)

{

	queue_work(dev->priv.events->wq, work);

}