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Message-Id: <20210316235112.72626-14-saeed@kernel.org>
Date: Tue, 16 Mar 2021 16:51:10 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>
Cc: netdev@...r.kernel.org, Jiri Pirko <jiri@...dia.com>,
Roi Dayan <roid@...dia.com>, Saeed Mahameed <saeedm@...dia.com>
Subject: [net-next 13/15] net/mlx5e: Do not reload ethernet ports when changing eswitch mode
From: Roi Dayan <roid@...dia.com>
When switching modes between legacy and switchdev and back, do not
reload ethernet interfaces. just change the profile from nic profile
to uplink rep profile in switchdev mode.
Signed-off-by: Roi Dayan <roid@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/dev.c | 3 -
drivers/net/ethernet/mellanox/mlx5/core/en.h | 1 +
.../mellanox/mlx5/core/en/reporter_rx.c | 1 +
.../mellanox/mlx5/core/en/reporter_tx.c | 1 +
.../net/ethernet/mellanox/mlx5/core/en_main.c | 6 +
.../net/ethernet/mellanox/mlx5/core/en_rep.c | 148 ++++++++++++------
.../ethernet/mellanox/mlx5/core/lib/mlx5.h | 9 ++
include/linux/mlx5/driver.h | 1 +
8 files changed, 116 insertions(+), 54 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/dev.c b/drivers/net/ethernet/mellanox/mlx5/core/dev.c
index b051417ede67..4def64d0e669 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/dev.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/dev.c
@@ -58,9 +58,6 @@ static bool is_eth_supported(struct mlx5_core_dev *dev)
if (!IS_ENABLED(CONFIG_MLX5_CORE_EN))
return false;
- if (is_eth_rep_supported(dev))
- return false;
-
if (MLX5_CAP_GEN(dev, port_type) != MLX5_CAP_PORT_TYPE_ETH)
return false;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 4d621d142f76..1f5bc4d91060 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -1173,6 +1173,7 @@ void mlx5e_detach_netdev(struct mlx5e_priv *priv);
void mlx5e_destroy_netdev(struct mlx5e_priv *priv);
int mlx5e_netdev_change_profile(struct mlx5e_priv *priv,
const struct mlx5e_profile *new_profile, void *new_ppriv);
+void mlx5e_netdev_attach_nic_profile(struct mlx5e_priv *priv);
void mlx5e_set_netdev_mtu_boundaries(struct mlx5e_priv *priv);
void mlx5e_build_nic_params(struct mlx5e_priv *priv, struct mlx5e_xsk *xsk, u16 mtu);
void mlx5e_build_rq_params(struct mlx5_core_dev *mdev,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
index f0a419fc4adf..34b3b316b688 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
@@ -635,4 +635,5 @@ void mlx5e_reporter_rx_destroy(struct mlx5e_priv *priv)
return;
devlink_port_health_reporter_destroy(priv->rx_reporter);
+ priv->rx_reporter = NULL;
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
index db64fa2620c4..63ee3b9416de 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
@@ -593,4 +593,5 @@ void mlx5e_reporter_tx_destroy(struct mlx5e_priv *priv)
return;
devlink_port_health_reporter_destroy(priv->tx_reporter);
+ priv->tx_reporter = NULL;
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 685cf071a9de..9c08f0bd1fcc 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5742,6 +5742,11 @@ int mlx5e_netdev_change_profile(struct mlx5e_priv *priv,
return err;
}
+void mlx5e_netdev_attach_nic_profile(struct mlx5e_priv *priv)
+{
+ mlx5e_netdev_change_profile(priv, &mlx5e_nic_profile, NULL);
+}
+
void mlx5e_destroy_netdev(struct mlx5e_priv *priv)
{
struct net_device *netdev = priv->netdev;
@@ -5852,6 +5857,7 @@ static int mlx5e_probe(struct auxiliary_device *adev,
mlx5e_devlink_port_type_eth_set(priv);
mlx5e_dcbnl_init_app(priv);
+ mlx5_uplink_netdev_set(mdev, netdev);
return 0;
err_resume:
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 9533085005c3..4cc902e0d71b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -44,6 +44,7 @@
#include "en_tc.h"
#include "en/rep/tc.h"
#include "en/rep/neigh.h"
+#include "en/devlink.h"
#include "fs_core.h"
#include "lib/mlx5.h"
#define CREATE_TRACE_POINTS
@@ -588,26 +589,15 @@ static void mlx5e_build_rep_params(struct net_device *netdev)
}
static void mlx5e_build_rep_netdev(struct net_device *netdev,
- struct mlx5_core_dev *mdev,
- struct mlx5_eswitch_rep *rep)
+ struct mlx5_core_dev *mdev)
{
SET_NETDEV_DEV(netdev, mdev->device);
- if (rep->vport == MLX5_VPORT_UPLINK) {
- netdev->netdev_ops = &mlx5e_netdev_ops;
- /* we want a persistent mac for the uplink rep */
- mlx5_query_mac_address(mdev, netdev->dev_addr);
- netdev->ethtool_ops = &mlx5e_ethtool_ops;
- mlx5e_dcbnl_build_rep_netdev(netdev);
- } else {
- netdev->netdev_ops = &mlx5e_netdev_ops_rep;
- eth_hw_addr_random(netdev);
- netdev->ethtool_ops = &mlx5e_rep_ethtool_ops;
- }
+ netdev->netdev_ops = &mlx5e_netdev_ops_rep;
+ eth_hw_addr_random(netdev);
+ netdev->ethtool_ops = &mlx5e_rep_ethtool_ops;
netdev->watchdog_timeo = 15 * HZ;
- netdev->features |= NETIF_F_NETNS_LOCAL;
-
#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
netdev->hw_features |= NETIF_F_HW_TC;
#endif
@@ -619,12 +609,9 @@ static void mlx5e_build_rep_netdev(struct net_device *netdev,
netdev->hw_features |= NETIF_F_TSO6;
netdev->hw_features |= NETIF_F_RXCSUM;
- if (rep->vport == MLX5_VPORT_UPLINK)
- netdev->hw_features |= NETIF_F_HW_VLAN_CTAG_RX;
- else
- netdev->features |= NETIF_F_VLAN_CHALLENGED;
-
netdev->features |= netdev->hw_features;
+ netdev->features |= NETIF_F_VLAN_CHALLENGED;
+ netdev->features |= NETIF_F_NETNS_LOCAL;
}
static int mlx5e_init_rep(struct mlx5_core_dev *mdev,
@@ -990,6 +977,14 @@ static void mlx5e_uplink_rep_enable(struct mlx5e_priv *priv)
mlx5e_dcbnl_initialize(priv);
mlx5e_dcbnl_init_app(priv);
mlx5e_rep_neigh_init(rpriv);
+
+ netdev->wanted_features |= NETIF_F_HW_TC;
+
+ rtnl_lock();
+ if (netif_running(netdev))
+ mlx5e_open(netdev);
+ netif_device_attach(netdev);
+ rtnl_unlock();
}
static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
@@ -997,6 +992,12 @@ static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
struct mlx5e_rep_priv *rpriv = priv->ppriv;
struct mlx5_core_dev *mdev = priv->mdev;
+ rtnl_lock();
+ if (netif_running(priv->netdev))
+ mlx5e_close(priv->netdev);
+ netif_device_detach(priv->netdev);
+ rtnl_unlock();
+
mlx5e_rep_neigh_cleanup(rpriv);
mlx5e_dcbnl_delete_app(priv);
mlx5_notifier_unregister(mdev, &priv->events_nb);
@@ -1081,26 +1082,56 @@ static const struct mlx5e_profile mlx5e_uplink_rep_profile = {
/* e-Switch vport representors */
static int
-mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
+mlx5e_vport_uplink_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
+{
+ struct mlx5e_priv *priv = netdev_priv(mlx5_uplink_netdev_get(dev));
+ struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
+ struct devlink_port *dl_port;
+ int err;
+
+ rpriv->netdev = priv->netdev;
+
+ err = mlx5e_netdev_change_profile(priv, &mlx5e_uplink_rep_profile,
+ rpriv);
+ if (err)
+ return err;
+
+ dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
+ if (dl_port)
+ devlink_port_type_eth_set(dl_port, rpriv->netdev);
+
+ return 0;
+}
+
+static void
+mlx5e_vport_uplink_rep_unload(struct mlx5e_rep_priv *rpriv)
+{
+ struct net_device *netdev = rpriv->netdev;
+ struct devlink_port *dl_port;
+ struct mlx5_core_dev *dev;
+ struct mlx5e_priv *priv;
+
+ priv = netdev_priv(netdev);
+ dev = priv->mdev;
+
+ dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
+ if (dl_port)
+ devlink_port_type_clear(dl_port);
+ mlx5e_netdev_attach_nic_profile(priv);
+}
+
+static int
+mlx5e_vport_vf_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
{
+ struct mlx5e_rep_priv *rpriv = mlx5e_rep_to_rep_priv(rep);
const struct mlx5e_profile *profile;
- struct mlx5e_rep_priv *rpriv;
struct devlink_port *dl_port;
struct net_device *netdev;
struct mlx5e_priv *priv;
unsigned int txqs, rxqs;
int nch, err;
- rpriv = kzalloc(sizeof(*rpriv), GFP_KERNEL);
- if (!rpriv)
- return -ENOMEM;
-
- /* rpriv->rep to be looked up when profile->init() is called */
- rpriv->rep = rep;
-
- profile = (rep->vport == MLX5_VPORT_UPLINK) ?
- &mlx5e_uplink_rep_profile : &mlx5e_rep_profile;
-
+ profile = &mlx5e_rep_profile;
nch = mlx5e_get_max_num_channels(dev);
txqs = nch * profile->max_tc;
rxqs = nch * profile->rq_groups;
@@ -1109,21 +1140,11 @@ mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
mlx5_core_warn(dev,
"Failed to create representor netdev for vport %d\n",
rep->vport);
- kfree(rpriv);
return -EINVAL;
}
- mlx5e_build_rep_netdev(netdev, dev, rep);
-
+ mlx5e_build_rep_netdev(netdev, dev);
rpriv->netdev = netdev;
- rep->rep_data[REP_ETH].priv = rpriv;
- INIT_LIST_HEAD(&rpriv->vport_sqs_list);
-
- if (rep->vport == MLX5_VPORT_UPLINK) {
- err = mlx5e_create_mdev_resources(dev);
- if (err)
- goto err_destroy_netdev;
- }
priv = netdev_priv(netdev);
priv->profile = profile;
@@ -1131,7 +1152,7 @@ mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
err = profile->init(dev, netdev);
if (err) {
netdev_warn(netdev, "rep profile init failed, %d\n", err);
- goto err_destroy_mdev_resources;
+ goto err_destroy_netdev;
}
err = mlx5e_attach_netdev(netdev_priv(netdev));
@@ -1161,13 +1182,34 @@ mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
err_cleanup_profile:
priv->profile->cleanup(priv);
-err_destroy_mdev_resources:
- if (rep->vport == MLX5_VPORT_UPLINK)
- mlx5e_destroy_mdev_resources(dev);
-
err_destroy_netdev:
mlx5e_destroy_netdev(netdev_priv(netdev));
- kfree(rpriv);
+ return err;
+}
+
+static int
+mlx5e_vport_rep_load(struct mlx5_core_dev *dev, struct mlx5_eswitch_rep *rep)
+{
+ struct mlx5e_rep_priv *rpriv;
+ int err;
+
+ rpriv = kzalloc(sizeof(*rpriv), GFP_KERNEL);
+ if (!rpriv)
+ return -ENOMEM;
+
+ /* rpriv->rep to be looked up when profile->init() is called */
+ rpriv->rep = rep;
+ rep->rep_data[REP_ETH].priv = rpriv;
+ INIT_LIST_HEAD(&rpriv->vport_sqs_list);
+
+ if (rep->vport == MLX5_VPORT_UPLINK)
+ err = mlx5e_vport_uplink_rep_load(dev, rep);
+ else
+ err = mlx5e_vport_vf_rep_load(dev, rep);
+
+ if (err)
+ kfree(rpriv);
+
return err;
}
@@ -1181,15 +1223,19 @@ mlx5e_vport_rep_unload(struct mlx5_eswitch_rep *rep)
struct devlink_port *dl_port;
void *ppriv = priv->ppriv;
+ if (rep->vport == MLX5_VPORT_UPLINK) {
+ mlx5e_vport_uplink_rep_unload(rpriv);
+ goto free_ppriv;
+ }
+
dl_port = mlx5_esw_offloads_devlink_port(dev->priv.eswitch, rpriv->rep->vport);
if (dl_port)
devlink_port_type_clear(dl_port);
unregister_netdev(netdev);
mlx5e_detach_netdev(priv);
priv->profile->cleanup(priv);
- if (rep->vport == MLX5_VPORT_UPLINK)
- mlx5e_destroy_mdev_resources(priv->mdev);
mlx5e_destroy_netdev(priv);
+free_ppriv:
kfree(ppriv); /* mlx5e_rep_priv */
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h
index d046db7bb047..2f536c5d30b1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h
@@ -95,4 +95,13 @@ static inline struct net *mlx5_core_net(struct mlx5_core_dev *dev)
return devlink_net(priv_to_devlink(dev));
}
+static inline void mlx5_uplink_netdev_set(struct mlx5_core_dev *mdev, struct net_device *netdev)
+{
+ mdev->mlx5e_res.uplink_netdev = netdev;
+}
+
+static inline struct net_device *mlx5_uplink_netdev_get(struct mlx5_core_dev *mdev)
+{
+ return mdev->mlx5e_res.uplink_netdev;
+}
#endif
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index f1d0340e46a7..23bb01d7c9b9 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -651,6 +651,7 @@ struct mlx5e_resources {
struct mlx5_sq_bfreg bfreg;
} hw_objs;
struct devlink_port dl_port;
+ struct net_device *uplink_netdev;
};
enum mlx5_sw_icm_type {
--
2.30.2
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