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Date: Fri, 10 Feb 2023 14:18:11 -0800
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
Tariq Toukan <tariqt@...dia.com>,
Mark Bloch <mbloch@...dia.com>, Roi Dayan <roid@...dia.com>
Subject: [net-next 05/15] net/mlx5: Lag, Add single RDMA device in multiport mode
From: Mark Bloch <mbloch@...dia.com>
In MultiPort E-Switch mode a single RDMA is created. This device has multiple
RDMA ports that represent the uplink ports that are connected to the E-Switch.
Account for this when creating the RDMA device so it has an addtional port for
the non native uplink.
As a side effect of this patch, use shared fdb in multiport eswitch mode.
Signed-off-by: Mark Bloch <mbloch@...dia.com>
Reviewed-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
drivers/infiniband/hw/mlx5/ib_rep.c | 18 ++++++---
.../net/ethernet/mellanox/mlx5/core/lag/lag.c | 6 +--
.../net/ethernet/mellanox/mlx5/core/lag/lag.h | 3 ++
.../ethernet/mellanox/mlx5/core/lag/mpesw.c | 37 +++++++++++++++----
include/linux/mlx5/driver.h | 1 +
5 files changed, 49 insertions(+), 16 deletions(-)
diff --git a/drivers/infiniband/hw/mlx5/ib_rep.c b/drivers/infiniband/hw/mlx5/ib_rep.c
index 52821485371a..ddcfc116b19a 100644
--- a/drivers/infiniband/hw/mlx5/ib_rep.c
+++ b/drivers/infiniband/hw/mlx5/ib_rep.c
@@ -37,6 +37,7 @@ mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
const struct mlx5_ib_profile *profile;
struct mlx5_core_dev *peer_dev;
struct mlx5_ib_dev *ibdev;
+ int second_uplink = false;
u32 peer_num_ports;
int vport_index;
int ret;
@@ -47,17 +48,24 @@ mlx5_ib_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
peer_dev = mlx5_lag_get_peer_mdev(dev);
peer_num_ports = mlx5_eswitch_get_total_vports(peer_dev);
if (mlx5_lag_is_master(dev)) {
- /* Only 1 ib port is the representor for both uplinks */
- num_ports += peer_num_ports - 1;
+ if (mlx5_lag_is_mpesw(dev))
+ num_ports += peer_num_ports;
+ else
+ num_ports += peer_num_ports - 1;
+
} else {
- if (rep->vport == MLX5_VPORT_UPLINK)
- return 0;
+ if (rep->vport == MLX5_VPORT_UPLINK) {
+ if (!mlx5_lag_is_mpesw(dev))
+ return 0;
+ second_uplink = true;
+ }
+
vport_index += peer_num_ports;
dev = peer_dev;
}
}
- if (rep->vport == MLX5_VPORT_UPLINK)
+ if (rep->vport == MLX5_VPORT_UPLINK && !second_uplink)
profile = &raw_eth_profile;
else
return mlx5_ib_set_vport_rep(dev, rep, vport_index);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
index 301994741b08..5d331b940f4d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.c
@@ -644,7 +644,7 @@ int mlx5_activate_lag(struct mlx5_lag *ldev,
return 0;
}
-static int mlx5_deactivate_lag(struct mlx5_lag *ldev)
+int mlx5_deactivate_lag(struct mlx5_lag *ldev)
{
struct mlx5_core_dev *dev0 = ldev->pf[MLX5_LAG_P1].dev;
struct mlx5_core_dev *dev1 = ldev->pf[MLX5_LAG_P2].dev;
@@ -721,7 +721,7 @@ bool mlx5_lag_check_prereq(struct mlx5_lag *ldev)
return true;
}
-static void mlx5_lag_add_devices(struct mlx5_lag *ldev)
+void mlx5_lag_add_devices(struct mlx5_lag *ldev)
{
int i;
@@ -738,7 +738,7 @@ static void mlx5_lag_add_devices(struct mlx5_lag *ldev)
}
}
-static void mlx5_lag_remove_devices(struct mlx5_lag *ldev)
+void mlx5_lag_remove_devices(struct mlx5_lag *ldev)
{
int i;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
index 2dbd96a86ef8..bc1f1dd3e283 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/lag.h
@@ -120,5 +120,8 @@ void mlx5_infer_tx_enabled(struct lag_tracker *tracker, u8 num_ports,
void mlx5_ldev_add_debugfs(struct mlx5_core_dev *dev);
void mlx5_ldev_remove_debugfs(struct dentry *dbg);
void mlx5_disable_lag(struct mlx5_lag *ldev);
+void mlx5_lag_remove_devices(struct mlx5_lag *ldev);
+int mlx5_deactivate_lag(struct mlx5_lag *ldev);
+void mlx5_lag_add_devices(struct mlx5_lag *ldev);
#endif /* __MLX5_LAG_H__ */
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c b/drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c
index 2f7f2af312d7..0c0ef600f643 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag/mpesw.c
@@ -67,15 +67,16 @@ static int mlx5_mpesw_metadata_set(struct mlx5_lag *ldev)
static int enable_mpesw(struct mlx5_lag *ldev)
{
- struct mlx5_core_dev *dev = ldev->pf[MLX5_LAG_P1].dev;
+ struct mlx5_core_dev *dev0 = ldev->pf[MLX5_LAG_P1].dev;
+ struct mlx5_core_dev *dev1 = ldev->pf[MLX5_LAG_P2].dev;
int err;
if (ldev->mode != MLX5_LAG_MODE_NONE)
return -EINVAL;
- if (mlx5_eswitch_mode(dev) != MLX5_ESWITCH_OFFLOADS ||
- !MLX5_CAP_PORT_SELECTION(dev, port_select_flow_table) ||
- !MLX5_CAP_GEN(dev, create_lag_when_not_master_up) ||
+ if (mlx5_eswitch_mode(dev0) != MLX5_ESWITCH_OFFLOADS ||
+ !MLX5_CAP_PORT_SELECTION(dev0, port_select_flow_table) ||
+ !MLX5_CAP_GEN(dev0, create_lag_when_not_master_up) ||
!mlx5_lag_check_prereq(ldev))
return -EOPNOTSUPP;
@@ -83,15 +84,32 @@ static int enable_mpesw(struct mlx5_lag *ldev)
if (err)
return err;
- err = mlx5_activate_lag(ldev, NULL, MLX5_LAG_MODE_MPESW, false);
+ mlx5_lag_remove_devices(ldev);
+
+ err = mlx5_activate_lag(ldev, NULL, MLX5_LAG_MODE_MPESW, true);
if (err) {
- mlx5_core_warn(dev, "Failed to create LAG in MPESW mode (%d)\n", err);
- goto out_err;
+ mlx5_core_warn(dev0, "Failed to create LAG in MPESW mode (%d)\n", err);
+ goto err_add_devices;
}
+ dev0->priv.flags &= ~MLX5_PRIV_FLAGS_DISABLE_IB_ADEV;
+ mlx5_rescan_drivers_locked(dev0);
+ err = mlx5_eswitch_reload_reps(dev0->priv.eswitch);
+ if (!err)
+ err = mlx5_eswitch_reload_reps(dev1->priv.eswitch);
+ if (err)
+ goto err_rescan_drivers;
+
return 0;
-out_err:
+err_rescan_drivers:
+ dev0->priv.flags |= MLX5_PRIV_FLAGS_DISABLE_IB_ADEV;
+ mlx5_rescan_drivers_locked(dev0);
+ mlx5_deactivate_lag(ldev);
+err_add_devices:
+ mlx5_lag_add_devices(ldev);
+ mlx5_eswitch_reload_reps(dev0->priv.eswitch);
+ mlx5_eswitch_reload_reps(dev1->priv.eswitch);
mlx5_mpesw_metadata_cleanup(ldev);
return err;
}
@@ -109,6 +127,7 @@ static void mlx5_mpesw_work(struct work_struct *work)
struct mlx5_mpesw_work_st *mpesww = container_of(work, struct mlx5_mpesw_work_st, work);
struct mlx5_lag *ldev = mpesww->lag;
+ mlx5_dev_list_lock();
mutex_lock(&ldev->lock);
if (ldev->mode_changes_in_progress) {
mpesww->result = -EAGAIN;
@@ -121,6 +140,7 @@ static void mlx5_mpesw_work(struct work_struct *work)
disable_mpesw(ldev);
unlock:
mutex_unlock(&ldev->lock);
+ mlx5_dev_list_unlock();
complete(&mpesww->comp);
}
@@ -187,3 +207,4 @@ bool mlx5_lag_is_mpesw(struct mlx5_core_dev *dev)
return ldev && ldev->mode == MLX5_LAG_MODE_MPESW;
}
+EXPORT_SYMBOL(mlx5_lag_is_mpesw);
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index a4bb5842a948..c9259350cdfc 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -1162,6 +1162,7 @@ bool mlx5_lag_is_active(struct mlx5_core_dev *dev);
bool mlx5_lag_mode_is_hash(struct mlx5_core_dev *dev);
bool mlx5_lag_is_master(struct mlx5_core_dev *dev);
bool mlx5_lag_is_shared_fdb(struct mlx5_core_dev *dev);
+bool mlx5_lag_is_mpesw(struct mlx5_core_dev *dev);
struct net_device *mlx5_lag_get_roce_netdev(struct mlx5_core_dev *dev);
u8 mlx5_lag_get_slave_port(struct mlx5_core_dev *dev,
struct net_device *slave);
--
2.39.1
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