[PATCH net-next 09/10] net/mlx5: qos: Init shared devlink rate domain
flat view
STALE606d
REVIEWED: 1 (0M)
From: Tariq Toukan <tariqt@nvidia.com>
Date: 2025-02-13 18:03:13
Also in:
linux-rdma, lkml, netdev
Subsystem:
mellanox mlx5 core vpi driver, networking drivers, the rest · Maintainers:
Saeed Mahameed, Leon Romanovsky, Tariq Toukan, Mark Bloch, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Status: Reviewed.
1 review trailer.
From: Cosmin Ratiu <redacted> If the device can do cross-esw scheduling, switch to using a shared rate domain so that devlink rate nodes can have parents from other functions of the same device. As a fallback mechanism, if switching to a shared rate domain failed, a warning is logged and the code proceeds with trying to use a private qos domain since cross-esw scheduling cannot be supported. Signed-off-by: Cosmin Ratiu <redacted> Reviewed-by: Carolina Jubran <redacted> Signed-off-by: Tariq Toukan <tariqt@nvidia.com> --- drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
index e6dcfe348a7e..9af12ae98691 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/esw/qos.c@@ -899,6 +899,20 @@ int mlx5_esw_qos_init(struct mlx5_eswitch *esw) bool use_shared_domain = esw->mode == MLX5_ESWITCH_OFFLOADS && MLX5_CAP_QOS(esw->dev, esw_cross_esw_sched); + if (use_shared_domain) { + u64 guid = mlx5_query_nic_system_image_guid(esw->dev); + int err; + + err = devlink_shared_rate_domain_init(priv_to_devlink(esw->dev), guid); + if (err) { + /* On failure, issue a warning and switch to using a private domain. */ + esw_warn(esw->dev, + "Shared devlink rate domain init failed (err %d), cross-esw QoS not available", + err); + use_shared_domain = false; + } + } + if (esw->qos.domain) { if (esw->qos.domain->shared == use_shared_domain) return 0; /* Nothing to change. */
--
2.45.0