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

Commit ab22be9b authored by Or Gerlitz's avatar Or Gerlitz Committed by David S. Miller
Browse files

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



Add the API to create send-to-vport e-switch rules of the form

 packet meta-data :: send-queue-number == $SQN and source-vport == 0 --> $VPORT

These rules are to be used for a send-to-vport logic which conceptually bypasses
the "normal" steering rules currently present at the e-switch datapath.

Such rule should apply only for packets that originate in the e-switch manager
vport (0) and are sent for a given SQN which is used by a given VF representor
device, and hence the matching logic.

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 3aa33572

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

+2 −1
Original line number Diff line number Diff line
@@ -193,6 +193,8 @@ int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw, 
int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,

				 int vport,

				 struct ifla_vf_stats *vf_stats);

struct mlx5_flow_rule *

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



#define MLX5_DEBUG_ESWITCH_MASK BIT(3)
@@ -204,5 +206,4 @@ int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw, 


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

	mlx5_core_dbg_mask(dev, MLX5_DEBUG_ESWITCH_MASK, format, ##__VA_ARGS__)



#endif /* __MLX5_ESWITCH_H__ */

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

+39 −0
Original line number Diff line number Diff line
@@ -38,6 +38,45 @@ 
#include "mlx5_core.h"

#include "eswitch.h"



struct mlx5_flow_rule *

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

{

	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, "FDB: 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_sqn, sqn);

	MLX5_SET(fte_match_set_misc, misc, source_port, 0x0); /* source vport is 0 */



	misc = MLX5_ADDR_OF(fte_match_param, match_c, misc_parameters);

	MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_sqn);

	MLX5_SET_TO_ONES(fte_match_set_misc, misc, source_port);



	dest.type = MLX5_FLOW_DESTINATION_TYPE_VPORT;

	dest.vport_num = vport;



	flow_rule = mlx5_add_flow_rule(esw->fdb_table.fdb, match_header, match_c,

				       match_v, MLX5_FLOW_CONTEXT_ACTION_FWD_DEST,

				       0, &dest);

	if (IS_ERR(flow_rule))

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

out:

	kfree(match_v);

	kfree(match_c);

	return flow_rule;

}



static int esw_add_fdb_miss_rule(struct mlx5_eswitch *esw)

{

	struct mlx5_flow_destination dest;