* [PATCH net-next v4] net/mlx5e: Don't allow forwarding between uplink
@ 2020-02-17 14:08 xiangxia.m.yue
2020-02-17 14:18 ` Roi Dayan
2020-02-21 19:06 ` Saeed Mahameed
0 siblings, 2 replies; 3+ messages in thread
From: xiangxia.m.yue @ 2020-02-17 14:08 UTC (permalink / raw)
To: gerlitz.or, roid, saeedm; +Cc: netdev, Tonghao Zhang
From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
We can install forwarding packets rule between uplink
in switchdev mode, as show below. But the hardware does
not do that as expected (mlnx_perf -i $PF1, we can't get
the counter of the PF1). By the way, if we add the uplink
PF0, PF1 to Open vSwitch and enable hw-offload, the rules
can be offloaded but not work fine too. This patch add a
check and if so return -EOPNOTSUPP.
$ tc filter add dev $PF0 protocol all parent ffff: prio 1 handle 1 \
flower skip_sw action mirred egress redirect dev $PF1
$ tc -d -s filter show dev $PF0 ingress
skip_sw
in_hw in_hw_count 1
action order 1: mirred (Egress Redirect to device enp130s0f1) stolen
...
Sent hardware 408954 bytes 4173 pkt
...
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 5 +++++
drivers/net/ethernet/mellanox/mlx5/core/en_rep.h | 1 +
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 17 +++++++++++++++++
3 files changed, 23 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 7b48cca..18d3dcd 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -1464,6 +1464,11 @@ static struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev)
.ndo_set_features = mlx5e_set_features,
};
+bool mlx5e_eswitch_uplink_rep(struct net_device *netdev)
+{
+ return netdev->netdev_ops == &mlx5e_netdev_ops_uplink_rep;
+}
+
bool mlx5e_eswitch_rep(struct net_device *netdev)
{
if (netdev->netdev_ops == &mlx5e_netdev_ops_rep ||
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
index 3f756d5..8336301 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
@@ -200,6 +200,7 @@ void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv,
void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv);
bool mlx5e_eswitch_rep(struct net_device *netdev);
+bool mlx5e_eswitch_uplink_rep(struct net_device *netdev);
#else /* CONFIG_MLX5_ESWITCH */
static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; }
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 74091f7..290cdf3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -3405,6 +3405,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
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;
+ struct mlx5e_rep_priv *rep_priv;
if (is_duplicated_output_device(priv->netdev,
out_dev,
@@ -3440,6 +3441,22 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
return err;
}
+ /* Don't allow forwarding between uplink.
+ *
+ * Input vport was stored esw_attr->in_rep.
+ * In LAG case, *priv* is the private data of
+ * uplink which may be not the input vport.
+ */
+ rep_priv = mlx5e_rep_to_rep_priv(attr->in_rep);
+ if (mlx5e_eswitch_uplink_rep(rep_priv->netdev) &&
+ mlx5e_eswitch_uplink_rep(out_dev)) {
+ NL_SET_ERR_MSG_MOD(extack,
+ "devices are both uplink, can't offload forwarding");
+ pr_err("devices %s %s are both uplink, can't offload forwarding\n",
+ priv->netdev->name, out_dev->name);
+ return -EOPNOTSUPP;
+ }
+
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");
--
1.8.3.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH net-next v4] net/mlx5e: Don't allow forwarding between uplink
2020-02-17 14:08 [PATCH net-next v4] net/mlx5e: Don't allow forwarding between uplink xiangxia.m.yue
@ 2020-02-17 14:18 ` Roi Dayan
2020-02-21 19:06 ` Saeed Mahameed
1 sibling, 0 replies; 3+ messages in thread
From: Roi Dayan @ 2020-02-17 14:18 UTC (permalink / raw)
To: xiangxia.m.yue, gerlitz.or, saeedm; +Cc: netdev
On 2020-02-17 4:08 PM, xiangxia.m.yue@gmail.com wrote:
> From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
>
> We can install forwarding packets rule between uplink
> in switchdev mode, as show below. But the hardware does
> not do that as expected (mlnx_perf -i $PF1, we can't get
> the counter of the PF1). By the way, if we add the uplink
> PF0, PF1 to Open vSwitch and enable hw-offload, the rules
> can be offloaded but not work fine too. This patch add a
> check and if so return -EOPNOTSUPP.
>
> $ tc filter add dev $PF0 protocol all parent ffff: prio 1 handle 1 \
> flower skip_sw action mirred egress redirect dev $PF1
>
> $ tc -d -s filter show dev $PF0 ingress
> skip_sw
> in_hw in_hw_count 1
> action order 1: mirred (Egress Redirect to device enp130s0f1) stolen
> ...
> Sent hardware 408954 bytes 4173 pkt
> ...
>
> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
> ---
> drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 5 +++++
> drivers/net/ethernet/mellanox/mlx5/core/en_rep.h | 1 +
> drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 17 +++++++++++++++++
> 3 files changed, 23 insertions(+)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> index 7b48cca..18d3dcd 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> @@ -1464,6 +1464,11 @@ static struct devlink_port *mlx5e_get_devlink_port(struct net_device *dev)
> .ndo_set_features = mlx5e_set_features,
> };
>
> +bool mlx5e_eswitch_uplink_rep(struct net_device *netdev)
> +{
> + return netdev->netdev_ops == &mlx5e_netdev_ops_uplink_rep;
> +}
> +
> bool mlx5e_eswitch_rep(struct net_device *netdev)
> {
> if (netdev->netdev_ops == &mlx5e_netdev_ops_rep ||
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
> index 3f756d5..8336301 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.h
> @@ -200,6 +200,7 @@ void mlx5e_rep_encap_entry_detach(struct mlx5e_priv *priv,
> void mlx5e_rep_queue_neigh_stats_work(struct mlx5e_priv *priv);
>
> bool mlx5e_eswitch_rep(struct net_device *netdev);
> +bool mlx5e_eswitch_uplink_rep(struct net_device *netdev);
>
> #else /* CONFIG_MLX5_ESWITCH */
> static inline bool mlx5e_is_uplink_rep(struct mlx5e_priv *priv) { return false; }
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> index 74091f7..290cdf3 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
> @@ -3405,6 +3405,7 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
> 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;
> + struct mlx5e_rep_priv *rep_priv;
>
> if (is_duplicated_output_device(priv->netdev,
> out_dev,
> @@ -3440,6 +3441,22 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv,
> return err;
> }
>
> + /* Don't allow forwarding between uplink.
> + *
> + * Input vport was stored esw_attr->in_rep.
> + * In LAG case, *priv* is the private data of
> + * uplink which may be not the input vport.
> + */
> + rep_priv = mlx5e_rep_to_rep_priv(attr->in_rep);
> + if (mlx5e_eswitch_uplink_rep(rep_priv->netdev) &&
> + mlx5e_eswitch_uplink_rep(out_dev)) {
> + NL_SET_ERR_MSG_MOD(extack,
> + "devices are both uplink, can't offload forwarding");
> + pr_err("devices %s %s are both uplink, can't offload forwarding\n",
> + priv->netdev->name, out_dev->name);
> + return -EOPNOTSUPP;
> + }
> +
> 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");
>
thanks
Reviewed-by: Roi Dayan <roid@mellanox.com>
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH net-next v4] net/mlx5e: Don't allow forwarding between uplink
2020-02-17 14:08 [PATCH net-next v4] net/mlx5e: Don't allow forwarding between uplink xiangxia.m.yue
2020-02-17 14:18 ` Roi Dayan
@ 2020-02-21 19:06 ` Saeed Mahameed
1 sibling, 0 replies; 3+ messages in thread
From: Saeed Mahameed @ 2020-02-21 19:06 UTC (permalink / raw)
To: Roi Dayan, saeedm, xiangxia.m.yue, gerlitz.or; +Cc: netdev
On Mon, 2020-02-17 at 22:08 +0800, xiangxia.m.yue@gmail.com wrote:
> From: Tonghao Zhang <xiangxia.m.yue@gmail.com>
>
> We can install forwarding packets rule between uplink
> in switchdev mode, as show below. But the hardware does
> not do that as expected (mlnx_perf -i $PF1, we can't get
> the counter of the PF1). By the way, if we add the uplink
> PF0, PF1 to Open vSwitch and enable hw-offload, the rules
> can be offloaded but not work fine too. This patch add a
> check and if so return -EOPNOTSUPP.
>
> $ tc filter add dev $PF0 protocol all parent ffff: prio 1 handle 1 \
> flower skip_sw action mirred egress redirect dev $PF1
>
> $ tc -d -s filter show dev $PF0 ingress
> skip_sw
> in_hw in_hw_count 1
> action order 1: mirred (Egress Redirect to device enp130s0f1)
> stolen
> ...
> Sent hardware 408954 bytes 4173 pkt
> ...
>
> Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Applied to net-next-mlx5
Thanks!
^ permalink raw reply [flat|nested] 3+ messages in thread
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2020-02-17 14:18 ` Roi Dayan
2020-02-21 19:06 ` Saeed Mahameed
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