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net/mlx5e: Disallow tc redirect offload cases we don't support

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After changing the parent_id to be the same for both NICs of same
the hardware device, netdev_port_same_parent_id now returns true for
more cases (all the lower devices in the hierarchy are on the same
hardware device).

If merged eswitch isn't enabled, these cases aren't supported, so disallow
them.

Signed-off-by: Paul Blakey <paulb@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Paul Blakey 2019-06-24 15:04:58 +03:00 committed by Saeed Mahameed
parent 7ff40a46dd
commit f6dc1264f1
3 changed files with 24 additions and 5 deletions
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4
drivers/net/ethernet/mellanox/mlx5/core/en/tc_tun.c
View file

@ -5,6 +5,7 @@
#include <net/gre.h>
#include <net/geneve.h>
#include "en/tc_tun.h"
#include "en_tc.h"
struct mlx5e_tc_tunnel *mlx5e_get_tc_tun(struct net_device *tunnel_dev)
{
@ -47,7 +48,8 @@ static int get_route_and_out_devs(struct mlx5e_priv *priv,
*route_dev = dev;
if (is_vlan_dev(*route_dev))
*out_dev = uplink_dev;
else if (mlx5e_eswitch_rep(dev))
else if (mlx5e_eswitch_rep(dev) &&
mlx5e_is_valid_eswitch_fwd_dev(priv, dev))
*out_dev = *route_dev;
else
return -EOPNOTSUPP;

22
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
View file

@ -2802,6 +2802,16 @@ static int add_vlan_pop_action(struct mlx5e_priv *priv,
return err;
}
bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
struct net_device *out_dev)
{
if (is_merged_eswitch_dev(priv, out_dev))
return true;
return mlx5e_eswitch_rep(out_dev) &&
same_hw_devs(priv, netdev_priv(out_dev));
}
static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
struct flow_action *flow_action,
struct mlx5e_tc_flow *flow,
@ -2867,9 +2877,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
MLX5_FLOW_CONTEXT_ACTION_COUNT;
if (netdev_port_same_parent_id(priv->netdev,
out_dev) ||
is_merged_eswitch_dev(priv, out_dev)) {
if (netdev_port_same_parent_id(priv->netdev, out_dev)) {
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct net_device *uplink_dev = mlx5_eswitch_uplink_get_proto_dev(esw, REP_ETH);
struct net_device *uplink_upper = netdev_master_upper_dev_get(uplink_dev);
@ -2886,6 +2894,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
if (err)
return err;
}
if (is_vlan_dev(parse_attr->filter_dev)) {
err = add_vlan_pop_action(priv, attr,
&action);
@ -2893,8 +2902,13 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
return err;
}
if (!mlx5e_eswitch_rep(out_dev))
if (!mlx5e_is_valid_eswitch_fwd_dev(priv, out_dev)) {
NL_SET_ERR_MSG_MOD(extack,
"devices are not on same switch HW, can't offload forwarding");
pr_err("devices %s %s not on same switch HW, can't offload forwarding\n",
priv->netdev->name, out_dev->name);
return -EOPNOTSUPP;
}
out_priv = netdev_priv(out_dev);
rpriv = out_priv->ppriv;

3
drivers/net/ethernet/mellanox/mlx5/core/en_tc.h
View file

@ -74,6 +74,9 @@ int mlx5e_tc_num_filters(struct mlx5e_priv *priv, int flags);
void mlx5e_tc_reoffload_flows_work(struct work_struct *work);
bool mlx5e_is_valid_eswitch_fwd_dev(struct mlx5e_priv *priv,
struct net_device *out_dev);
#else /* CONFIG_MLX5_ESWITCH */
static inline int mlx5e_tc_nic_init(struct mlx5e_priv *priv) { return 0; }
static inline void mlx5e_tc_nic_cleanup(struct mlx5e_priv *priv) {}