Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit fed9ce22 authored by Or Gerlitz's avatar Or Gerlitz Committed by David S. Miller
Browse files

net/mlx5: E-Switch, Add API to create vport rx rules 



Add the API to create vport rx rules of the form

	packet meta-data :: vport == $VPORT --> $TIR

where the TIR is opened by this VF representor.

This logic will by used for packets that didn't match any rule in the
e-switch datapath and should be received into the host OS through the
netdevice that represents the VF they were sent from.

Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent c116c6ee

drivers/net/ethernet/mellanox/mlx5/core/eswitch.h

+4 −0
Original line number Diff line number Diff line
@@ -157,6 +157,7 @@ enum { 


struct mlx5_esw_offload {

	struct mlx5_flow_table *ft_offloads;

	struct mlx5_flow_group *vport_rx_group;

};



struct mlx5_eswitch {
@@ -201,6 +202,9 @@ int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw, 
struct mlx5_flow_rule *

mlx5_eswitch_add_send_to_vport_rule(struct mlx5_eswitch *esw, int vport, u32 sqn);



struct mlx5_flow_rule *

mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch *esw, int vport, u32 tirn);



#define MLX5_DEBUG_ESWITCH_MASK BIT(3)



#define esw_info(dev, format, ...)				\

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

+85 −0
Original line number Diff line number Diff line
@@ -243,3 +243,88 @@ static void esw_destroy_offloads_table(struct mlx5_eswitch *esw) 


	mlx5_destroy_flow_table(offloads->ft_offloads);

}



static int esw_create_vport_rx_group(struct mlx5_eswitch *esw)

{

	int inlen = MLX5_ST_SZ_BYTES(create_flow_group_in);

	struct mlx5_flow_group *g;

	struct mlx5_priv *priv = &esw->dev->priv;

	u32 *flow_group_in;

	void *match_criteria, *misc;

	int err = 0;

	int nvports = priv->sriov.num_vfs + 2;



	flow_group_in = mlx5_vzalloc(inlen);

	if (!flow_group_in)

		return -ENOMEM;



	/* create vport rx group */

	memset(flow_group_in, 0, inlen);

	MLX5_SET(create_flow_group_in, flow_group_in, match_criteria_enable,

		 MLX5_MATCH_MISC_PARAMETERS);



	match_criteria = MLX5_ADDR_OF(create_flow_group_in, flow_group_in, match_criteria);

	misc = MLX5_ADDR_OF(fte_match_param, match_criteria, misc_parameters);

	MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);



	MLX5_SET(create_flow_group_in, flow_group_in, start_flow_index, 0);

	MLX5_SET(create_flow_group_in, flow_group_in, end_flow_index, nvports - 1);



	g = mlx5_create_flow_group(esw->offloads.ft_offloads, flow_group_in);



	if (IS_ERR(g)) {

		err = PTR_ERR(g);

		mlx5_core_warn(esw->dev, "Failed to create vport rx group err %d\n", err);

		goto out;

	}



	esw->offloads.vport_rx_group = g;

out:

	kfree(flow_group_in);

	return err;

}



static void esw_destroy_vport_rx_group(struct mlx5_eswitch *esw)

{

	mlx5_destroy_flow_group(esw->offloads.vport_rx_group);

}



struct mlx5_flow_rule *

mlx5_eswitch_create_vport_rx_rule(struct mlx5_eswitch *esw, int vport, u32 tirn)

{

	struct mlx5_flow_destination dest;

	struct mlx5_flow_rule *flow_rule;

	int match_header = MLX5_MATCH_MISC_PARAMETERS;

	u32 *match_v, *match_c;

	void *misc;



	match_v = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);

	match_c = kzalloc(MLX5_ST_SZ_BYTES(fte_match_param), GFP_KERNEL);

	if (!match_v || !match_c) {

		esw_warn(esw->dev, "Failed to alloc match parameters\n");

		flow_rule = ERR_PTR(-ENOMEM);

		goto out;

	}



	misc = MLX5_ADDR_OF(fte_match_param, match_v, misc_parameters);

	MLX5_SET(fte_match_set_misc, misc, source_port, vport);



	misc = MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters);

	MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);



	dest.type = MLX5_FLOW_DESTINATION_TYPE_TIR;

	dest.tir_num = tirn;



	flow_rule = mlx5_add_flow_rule(esw->offloads.ft_offloads, match_header, match_c,

				       match_v, MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,

				       0, &dest);

	if (IS_ERR(flow_rule)) {

		esw_warn(esw->dev, "fs offloads: Failed to add vport rx rule err %ld\n", PTR_ERR(flow_rule));

		goto out;

	}



out:

	kfree(match_v);

	kfree(match_c);

	return flow_rule;

}