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RDMA/mlx5: Change default device for LAG slaves in RDMA TRANSPORT namespaces

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In case of a LAG configuration change the root namespace core device for
all of the LAG slaves to be the core device of the master device for
RDMA_TRANSPORT namespaces, in order to ensure all tables are created
through the master device.
Once the LAG is disabled revert back to the native core device.

Signed-off-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Edward Srouji <edwards@nvidia.com>
Link: https://patch.msgid.link/20251029-support-other-eswitch-v1-4-98bb707b5d57@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Patrisious Haddad 2025-10-29 17:42:56 +02:00 committed by Leon Romanovsky
parent d06ccdc952
commit 3506242da0
1 changed files with 72 additions and 2 deletions
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74
drivers/infiniband/hw/mlx5/ib_rep.c
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@ -44,6 +44,63 @@ static void mlx5_ib_num_ports_update(struct mlx5_core_dev *dev, u32 *num_ports)
}
}
static int mlx5_ib_set_owner_transport(struct mlx5_core_dev *cur_owner,
struct mlx5_core_dev *new_owner)
{
int ret;
if (!MLX5_CAP_FLOWTABLE_RDMA_TRANSPORT_TX(cur_owner, ft_support) ||
!MLX5_CAP_FLOWTABLE_RDMA_TRANSPORT_RX(cur_owner, ft_support))
return 0;
if (!MLX5_CAP_ADV_RDMA(new_owner, rdma_transport_manager) ||
!MLX5_CAP_ADV_RDMA(new_owner, rdma_transport_manager_other_eswitch))
return 0;
ret = mlx5_fs_set_root_dev(cur_owner, new_owner,
FS_FT_RDMA_TRANSPORT_TX);
if (ret)
return ret;
ret = mlx5_fs_set_root_dev(cur_owner, new_owner,
FS_FT_RDMA_TRANSPORT_RX);
if (ret) {
mlx5_fs_set_root_dev(cur_owner, cur_owner,
FS_FT_RDMA_TRANSPORT_TX);
return ret;
}
return 0;
}
static void mlx5_ib_release_transport(struct mlx5_core_dev *dev)
{
struct mlx5_core_dev *peer_dev;
int i, ret;
mlx5_lag_for_each_peer_mdev(dev, peer_dev, i) {
ret = mlx5_ib_set_owner_transport(peer_dev, peer_dev);
WARN_ON_ONCE(ret);
}
}
static int mlx5_ib_take_transport(struct mlx5_core_dev *dev)
{
struct mlx5_core_dev *peer_dev;
int ret;
int i;
mlx5_lag_for_each_peer_mdev(dev, peer_dev, i) {
ret = mlx5_ib_set_owner_transport(peer_dev, dev);
if (ret) {
mlx5_ib_release_transport(dev);
return ret;
}
}
return 0;
}
static int
mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
{
@ -88,10 +145,18 @@ mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
else
return mlx5_ib_set_vport_rep(lag_master, rep, vport_index);
if (mlx5_lag_is_shared_fdb(dev)) {
ret = mlx5_ib_take_transport(lag_master);
if (ret)
return ret;
}
ibdev = ib_alloc_device_with_net(mlx5_ib_dev, ib_dev,
mlx5_core_net(lag_master));
if (!ibdev)
return -ENOMEM;
if (!ibdev) {
ret = -ENOMEM;
goto release_transport;
}
ibdev->port = kcalloc(num_ports, sizeof(*ibdev->port),
GFP_KERNEL);
@ -127,6 +192,10 @@ fail_add:
kfree(ibdev->port);
fail_port:
ib_dealloc_device(&ibdev->ib_dev);
release_transport:
if (mlx5_lag_is_shared_fdb(lag_master))
mlx5_ib_release_transport(lag_master);
return ret;
}
@ -182,6 +251,7 @@ mlx5_ib_vport_rep_unload(struct mlx5_eswitch_rep *rep)
esw = peer_mdev->priv.eswitch;
mlx5_eswitch_unregister_vport_reps(esw, REP_IB);
}
mlx5_ib_release_transport(mdev);
}
__mlx5_ib_remove(dev, dev->profile, MLX5_IB_STAGE_MAX);
}