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Commit c538adb3 authored by Arkadi Sharshevsky's avatar Arkadi Sharshevsky Committed by David S. Miller
Browse files

mlxsw: spectrum_dpipe: Add initial support for the router adjacency table 



Add initial support for router adjacency table. The table does lookup
based on the nexthop-group index and the local nexthop offset. After
locating the nexthop entry it sets the destination MAC address and the
egress RIF.

Signed-off-by: default avatarArkadi Sharshevsky <arkadis@mellanox.com>
Signed-off-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c556cd28

drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.c

+99 −1
Original line number Diff line number Diff line
@@ -841,6 +841,97 @@ static void mlxsw_sp_dpipe_host6_table_fini(struct mlxsw_sp *mlxsw_sp) 
				       MLXSW_SP_DPIPE_TABLE_NAME_HOST6);

}



static int mlxsw_sp_dpipe_table_adj_matches_dump(void *priv,

						 struct sk_buff *skb)

{

	struct devlink_dpipe_match match = {0};

	int err;



	match.type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;

	match.header = &mlxsw_sp_dpipe_header_metadata;

	match.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ADJ_INDEX;



	err = devlink_dpipe_match_put(skb, &match);

	if (err)

		return err;



	match.type = DEVLINK_DPIPE_MATCH_TYPE_FIELD_EXACT;

	match.header = &mlxsw_sp_dpipe_header_metadata;

	match.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ADJ_HASH_INDEX;



	return devlink_dpipe_match_put(skb, &match);

}



static int mlxsw_sp_dpipe_table_adj_actions_dump(void *priv,

						 struct sk_buff *skb)

{

	struct devlink_dpipe_action action = {0};

	int err;



	action.type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;

	action.header = &devlink_dpipe_header_ethernet;

	action.field_id = DEVLINK_DPIPE_FIELD_ETHERNET_DST_MAC;



	err = devlink_dpipe_action_put(skb, &action);

	if (err)

		return err;



	action.type = DEVLINK_DPIPE_ACTION_TYPE_FIELD_MODIFY;

	action.header = &mlxsw_sp_dpipe_header_metadata;

	action.field_id = MLXSW_SP_DPIPE_FIELD_METADATA_ERIF_PORT;



	return devlink_dpipe_action_put(skb, &action);

}



static u64 mlxsw_sp_dpipe_table_adj_size(struct mlxsw_sp *mlxsw_sp)

{

	struct mlxsw_sp_nexthop *nh;

	u64 size = 0;



	mlxsw_sp_nexthop_for_each(nh, mlxsw_sp->router)

		if (mlxsw_sp_nexthop_offload(nh) &&

		    !mlxsw_sp_nexthop_group_has_ipip(nh))

			size++;

	return size;

}



static u64

mlxsw_sp_dpipe_table_adj_size_get(void *priv)

{

	struct mlxsw_sp *mlxsw_sp = priv;

	u64 size;



	rtnl_lock();

	size = mlxsw_sp_dpipe_table_adj_size(mlxsw_sp);

	rtnl_unlock();



	return size;

}



static struct devlink_dpipe_table_ops mlxsw_sp_dpipe_table_adj_ops = {

	.matches_dump = mlxsw_sp_dpipe_table_adj_matches_dump,

	.actions_dump = mlxsw_sp_dpipe_table_adj_actions_dump,

	.size_get = mlxsw_sp_dpipe_table_adj_size_get,

};



static int mlxsw_sp_dpipe_adj_table_init(struct mlxsw_sp *mlxsw_sp)

{

	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);



	return devlink_dpipe_table_register(devlink,

					    MLXSW_SP_DPIPE_TABLE_NAME_ADJ,

					    &mlxsw_sp_dpipe_table_adj_ops,

					    mlxsw_sp, false);

}



static void mlxsw_sp_dpipe_adj_table_fini(struct mlxsw_sp *mlxsw_sp)

{

	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);



	devlink_dpipe_table_unregister(devlink,

				       MLXSW_SP_DPIPE_TABLE_NAME_ADJ);

}



int mlxsw_sp_dpipe_init(struct mlxsw_sp *mlxsw_sp)

{

	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);
@@ -861,8 +952,14 @@ int mlxsw_sp_dpipe_init(struct mlxsw_sp *mlxsw_sp) 
	err = mlxsw_sp_dpipe_host6_table_init(mlxsw_sp);

	if (err)

		goto err_host6_table_init;

	return 0;



	err = mlxsw_sp_dpipe_adj_table_init(mlxsw_sp);

	if (err)

		goto err_adj_table_init;



	return 0;

err_adj_table_init:

	mlxsw_sp_dpipe_host6_table_fini(mlxsw_sp);

err_host6_table_init:

	mlxsw_sp_dpipe_host4_table_fini(mlxsw_sp);

err_host4_table_init:
@@ -876,6 +973,7 @@ void mlxsw_sp_dpipe_fini(struct mlxsw_sp *mlxsw_sp) 
{

	struct devlink *devlink = priv_to_devlink(mlxsw_sp->core);



	mlxsw_sp_dpipe_adj_table_fini(mlxsw_sp);

	mlxsw_sp_dpipe_host6_table_fini(mlxsw_sp);

	mlxsw_sp_dpipe_host4_table_fini(mlxsw_sp);

	mlxsw_sp_dpipe_erif_table_fini(mlxsw_sp);

drivers/net/ethernet/mellanox/mlxsw/spectrum_dpipe.h

+1 −0
Original line number Diff line number Diff line
@@ -56,5 +56,6 @@ static inline void mlxsw_sp_dpipe_fini(struct mlxsw_sp *mlxsw_sp) 
#define MLXSW_SP_DPIPE_TABLE_NAME_ERIF "mlxsw_erif"

#define MLXSW_SP_DPIPE_TABLE_NAME_HOST4 "mlxsw_host4"

#define MLXSW_SP_DPIPE_TABLE_NAME_HOST6 "mlxsw_host6"

#define MLXSW_SP_DPIPE_TABLE_NAME_ADJ "mlxsw_adj"



#endif /* _MLXSW_PIPELINE_H_*/