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net/mlx5e: Do not reload ethernet ports when changing eswitch mode

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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@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Roi Dayan 2020-09-16 10:11:33 +03:00 committed by Saeed Mahameed
parent fec2b4bb39
commit 7a9fb35e8c
8 changed files with 116 additions and 54 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/dev.c
View File

@ -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;

1
drivers/net/ethernet/mellanox/mlx5/core/en.h
View File

@ -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,

1
drivers/net/ethernet/mellanox/mlx5/core/en/reporter_rx.c
View File

@ -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;
}

1
drivers/net/ethernet/mellanox/mlx5/core/en/reporter_tx.c
View File

@ -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;
}

6
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -5742,6 +5742,11 @@ rollback:
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:

148
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
View File

@ -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 @@ err_detach_netdev:
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 */
}

9
drivers/net/ethernet/mellanox/mlx5/core/lib/mlx5.h
View File

@ -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

1
include/linux/mlx5/driver.h
View File

@ -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 {