From: Bodong Wang <bodong@mellanox.com>
Date: Wed, 13 Feb 2019 16:52:34 +0000 (-0600)
Subject: net/mlx5: Correctly set LAG mode for ECPF
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=86b39a66b75f2f360eef56bdb5ac37d5068a9b7d;p=linux.git

net/mlx5: Correctly set LAG mode for ECPF

When bonding is added, driver assumes that it's RoCE LAG if no VF is
enabled. This is not enough for ECPF as the VF is enabled in host PF
side. LAG should only choose RoCE mode when both slave devices meet
conditions below:
 1. E-Switch offloads mode is NONE.
 2. No VF is enabled.

Signed-off-by: Bodong Wang <bodong@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
---

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
index 2d223385dc819..04c5aca7f8c54 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
@@ -343,6 +343,11 @@ static void mlx5_do_bond(struct mlx5_lag *ldev)
 		roce_lag = !mlx5_sriov_is_enabled(dev0) &&
 			   !mlx5_sriov_is_enabled(dev1);
 
+#ifdef CONFIG_MLX5_ESWITCH
+		roce_lag &= dev0->priv.eswitch->mode == SRIOV_NONE &&
+			    dev1->priv.eswitch->mode == SRIOV_NONE;
+#endif
+
 		if (roce_lag)
 			mlx5_lag_remove_ib_devices(ldev);