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[net,11/15] net/mlx5: Disallow RoCE on multi port slave device

Message ID 20210212025641.323844-12-saeed@kernel.org (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series [net,01/15] net/mlx5e: E-switch, Fix rate calculation for overflow | expand

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netdev/checkpatch warning WARNING: line length of 91 exceeds 80 columns
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netdev/stable success Stable not CCed

Commit Message

Saeed Mahameed Feb. 12, 2021, 2:56 a.m. UTC 
From: Shay Drory <shayd@nvidia.com>

In dual port mode, setting roce enabled/disable for the slave device
have no effect. e.g.: the slave device roce status remain unchanged.
Therefore disable it and add an error message.
Enable or disable roce of the master device affect both master and slave
devices.

Fixes: cc9defcbb8fa ("net/mlx5: Handle "enable_roce" devlink param")
Signed-off-by: Shay Drory <shayd@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 4 ++++
 1 file changed, 4 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
index 3261d0dc1104..317ce6b80b23 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
@@ -273,6 +273,10 @@  static int mlx5_devlink_enable_roce_validate(struct devlink *devlink, u32 id,
 		NL_SET_ERR_MSG_MOD(extack, "Device doesn't support RoCE");
 		return -EOPNOTSUPP;
 	}
+	if (mlx5_core_is_mp_slave(dev)) {
+		NL_SET_ERR_MSG_MOD(extack, "Multi port slave device can't configure RoCE");
+		return -EOPNOTSUPP;
+	}
 
 	return 0;
 }