Commit 724b509c authored by Roi Dayan's avatar Roi Dayan Committed by Saeed Mahameed
Browse files

net/mlx5: Add multipath mode 



In order to offload ecmp-on-host scheme where next-hop routes are used,
we will make use of HW LAG. Add accessor function to let upper layers
in the driver to realize if the lag acts in multi-path mode.

Signed-off-by: default avatarRoi Dayan <roid@mellanox.com>
Reviewed-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent e6ee5e71

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

+1 −1
Original line number Diff line number Diff line
@@ -30,7 +30,7 @@ mlx5_core-$(CONFIG_MLX5_CORE_EN) += en_main.o en_common.o en_fs.o en_ethtool.o \ 
mlx5_core-$(CONFIG_MLX5_EN_ARFS)     += en_arfs.o

mlx5_core-$(CONFIG_MLX5_EN_RXNFC)    += en_fs_ethtool.o

mlx5_core-$(CONFIG_MLX5_CORE_EN_DCB) += en_dcbnl.o en/port_buffer.o

mlx5_core-$(CONFIG_MLX5_ESWITCH)     += en_rep.o en_tc.o en/tc_tun.o lib/port_tun.o

mlx5_core-$(CONFIG_MLX5_ESWITCH)     += en_rep.o en_tc.o en/tc_tun.o lib/port_tun.o lag_mp.o



#

# Core extra

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

+3 −1
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@@ -9,9 +9,11 @@ 
enum {

	MLX5_LAG_FLAG_ROCE   = 1 << 0,

	MLX5_LAG_FLAG_SRIOV  = 1 << 1,

	MLX5_LAG_FLAG_MULTIPATH = 1 << 2,

};



#define MLX5_LAG_MODE_FLAGS (MLX5_LAG_FLAG_ROCE | MLX5_LAG_FLAG_SRIOV)

#define MLX5_LAG_MODE_FLAGS (MLX5_LAG_FLAG_ROCE | MLX5_LAG_FLAG_SRIOV |\

			     MLX5_LAG_FLAG_MULTIPATH)



struct lag_func {

	struct mlx5_core_dev *dev;

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

0 → 100644
+23 −0
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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB

/* Copyright (c) 2019 Mellanox Technologies. */



#include <linux/netdevice.h>

#include "lag.h"

#include "mlx5_core.h"

#include "eswitch.h"



static bool __mlx5_lag_is_multipath(struct mlx5_lag *ldev)

{

	return !!(ldev->flags & MLX5_LAG_FLAG_MULTIPATH);

}



bool mlx5_lag_is_multipath(struct mlx5_core_dev *dev)

{

	struct mlx5_lag *ldev;

	bool res;



	ldev = mlx5_lag_dev_get(dev);

	res  = ldev && __mlx5_lag_is_multipath(ldev);



	return res;

}

include/linux/mlx5/driver.h

+1 −0
Original line number Diff line number Diff line
@@ -1041,6 +1041,7 @@ int mlx5_cmd_create_vport_lag(struct mlx5_core_dev *dev); 
int mlx5_cmd_destroy_vport_lag(struct mlx5_core_dev *dev);

bool mlx5_lag_is_roce(struct mlx5_core_dev *dev);

bool mlx5_lag_is_sriov(struct mlx5_core_dev *dev);

bool mlx5_lag_is_multipath(struct mlx5_core_dev *dev);

bool mlx5_lag_is_active(struct mlx5_core_dev *dev);

struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev);

int mlx5_lag_query_cong_counters(struct mlx5_core_dev *dev,

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