diff mbox series

[net,06/12] net/mlx5: Block switchdev mode while devlink traps are active

Message ID 20210810035923.345745-7-saeed@kernel.org
State New
Headers show
Series mlx5 fixes 2021-08-09 | expand

Commit Message

Saeed Mahameed Aug. 10, 2021, 3:59 a.m. UTC 
From: Aya Levin <ayal@nvidia.com>

Since switchdev mode can't support  devlink traps, verify there are
no active devlink traps before moving eswitch to switchdev mode. If
there are active traps, prevent the switchdev mode configuration.

Fixes: eb3862a0525d ("net/mlx5e: Enable traps according to link state")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 .../ethernet/mellanox/mlx5/core/eswitch_offloads.c | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index 011e766e4f67..3bb71a186004 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -48,6 +48,7 @@ 
 #include "lib/fs_chains.h"
 #include "en_tc.h"
 #include "en/mapping.h"
+#include "devlink.h"
 
 #define mlx5_esw_for_each_rep(esw, i, rep) \
 	xa_for_each(&((esw)->offloads.vport_reps), i, rep)
@@ -3001,12 +3002,19 @@  int mlx5_devlink_eswitch_mode_set(struct devlink *devlink, u16 mode,
 	if (cur_mlx5_mode == mlx5_mode)
 		goto unlock;
 
-	if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV)
+	if (mode == DEVLINK_ESWITCH_MODE_SWITCHDEV) {
+		if (mlx5_devlink_trap_get_num_active(esw->dev)) {
+			NL_SET_ERR_MSG_MOD(extack,
+					   "Can't change mode while devlink traps are active");
+			err = -EOPNOTSUPP;
+			goto unlock;
+		}
 		err = esw_offloads_start(esw, extack);
-	else if (mode == DEVLINK_ESWITCH_MODE_LEGACY)
+	} else if (mode == DEVLINK_ESWITCH_MODE_LEGACY) {
 		err = esw_offloads_stop(esw, extack);
-	else
+	} else {
 		err = -EINVAL;
+	}
 
 unlock:
 	mlx5_esw_unlock(esw);