diff mbox series

[net,4/6] net/mlx5: E-Switch, Fix switching to switchdev mode in MPV

Message ID 20241203204920.232744-5-tariqt@nvidia.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series mlx5 misc fixes 2024-12-03 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag present in non-next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: linux-rdma@vger.kernel.org
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 304 this patch: 304
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 10 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-12-04--15-02 (tests: 760)

Commit Message

Tariq Toukan Dec. 3, 2024, 8:49 p.m. UTC 
From: Patrisious Haddad <phaddad@nvidia.com>

Fix the mentioned commit change for MPV mode, since in MPV mode the IB
device is shared between different core devices, so under this change
when moving both devices simultaneously to switchdev mode the IB device
removal and re-addition can race with itself causing unexpected behavior.

In such case do rescan_drivers() only once in order to add the ethernet
representor auxiliary device, and skip adding and removing IB devices.

Fixes: ab85ebf43723 ("net/mlx5: E-switch, refactor eswitch mode change")
Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c | 4 ++--
 1 file changed, 2 insertions(+), 2 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 5213d5b2cad5..d5b42b3a19fd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -2335,8 +2335,8 @@  static int esw_create_restore_table(struct mlx5_eswitch *esw)
 static void esw_mode_change(struct mlx5_eswitch *esw, u16 mode)
 {
 	mlx5_devcom_comp_lock(esw->dev->priv.hca_devcom_comp);
-
-	if (esw->dev->priv.flags & MLX5_PRIV_FLAGS_DISABLE_IB_ADEV) {
+	if (esw->dev->priv.flags & MLX5_PRIV_FLAGS_DISABLE_IB_ADEV ||
+	    mlx5_core_mp_enabled(esw->dev)) {
 		esw->mode = mode;
 		mlx5_rescan_drivers_locked(esw->dev);
 		mlx5_devcom_comp_unlock(esw->dev->priv.hca_devcom_comp);