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Date: Sun, 30 Oct 2016 23:22:01 +0200
From: Saeed Mahameed <saeedm@...lanox.com>
To: "David S. Miller" <davem@...emloft.net>,
Doug Ledford <dledford@...hat.com>
Cc: netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
Or Gerlitz <ogerlitz@...lanox.com>,
Leon Romanovsky <leonro@...lanox.com>,
Tal Alon <talal@...lanox.com>,
Matan Barak <matanb@...lanox.com>,
Mohamad Haj Yahia <mohamad@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>,
Leon Romanovsky <leon@...nel.org>
Subject: [PATCH for-next V2 08/15] net/mlx5: Add SRIOV VF max rate configuration support
From: Mohamad Haj Yahia <mohamad@...lanox.com>
Implement the vf set rate ndo by modifying the TSAR vport rate limit.
Signed-off-by: Mohamad Haj Yahia <mohamad@...lanox.com>
Signed-off-by: Saeed Mahameed <saeedm@...lanox.com>
Signed-off-by: Leon Romanovsky <leon@...nel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 15 ++++++
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c | 63 +++++++++++++++++++++++
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h | 2 +
3 files changed, 80 insertions(+)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 7eaf380..7f763d2 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2945,6 +2945,20 @@ static int mlx5e_set_vf_trust(struct net_device *dev, int vf, bool setting)
return mlx5_eswitch_set_vport_trust(mdev->priv.eswitch, vf + 1, setting);
}
+
+static int mlx5e_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate,
+ int max_tx_rate)
+{
+ struct mlx5e_priv *priv = netdev_priv(dev);
+ struct mlx5_core_dev *mdev = priv->mdev;
+
+ if (min_tx_rate)
+ return -EOPNOTSUPP;
+
+ return mlx5_eswitch_set_vport_rate(mdev->priv.eswitch, vf + 1,
+ max_tx_rate);
+}
+
static int mlx5_vport_link2ifla(u8 esw_link)
{
switch (esw_link) {
@@ -3252,6 +3266,7 @@ static const struct net_device_ops mlx5e_netdev_ops_sriov = {
.ndo_set_vf_vlan = mlx5e_set_vf_vlan,
.ndo_set_vf_spoofchk = mlx5e_set_vf_spoofchk,
.ndo_set_vf_trust = mlx5e_set_vf_trust,
+ .ndo_set_vf_rate = mlx5e_set_vf_rate,
.ndo_get_vf_config = mlx5e_get_vf_config,
.ndo_set_vf_link_state = mlx5e_set_vf_link_state,
.ndo_get_vf_stats = mlx5e_get_vf_stats,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 2e11a94..9ef01d1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1451,6 +1451,47 @@ static void esw_vport_disable_qos(struct mlx5_eswitch *esw, int vport_num)
vport->qos.enabled = false;
}
+static int esw_vport_qos_config(struct mlx5_eswitch *esw, int vport_num,
+ u32 max_rate)
+{
+ u32 sched_ctx[MLX5_ST_SZ_DW(scheduling_context)] = {0};
+ struct mlx5_vport *vport = &esw->vports[vport_num];
+ struct mlx5_core_dev *dev = esw->dev;
+ void *vport_elem;
+ u32 bitmask = 0;
+ int err = 0;
+
+ if (!MLX5_CAP_GEN(dev, qos) || !MLX5_CAP_QOS(dev, esw_scheduling))
+ return -EOPNOTSUPP;
+
+ if (!vport->qos.enabled)
+ return -EIO;
+
+ MLX5_SET(scheduling_context, &sched_ctx, element_type,
+ SCHEDULING_CONTEXT_ELEMENT_TYPE_VPORT);
+ vport_elem = MLX5_ADDR_OF(scheduling_context, &sched_ctx,
+ element_attributes);
+ MLX5_SET(vport_element, vport_elem, vport_number, vport_num);
+ MLX5_SET(scheduling_context, &sched_ctx, parent_element_id,
+ esw->qos.root_tsar_id);
+ MLX5_SET(scheduling_context, &sched_ctx, max_average_bw,
+ max_rate);
+ bitmask |= MODIFY_SCHEDULING_ELEMENT_IN_MODIFY_BITMASK_MAX_AVERAGE_BW;
+
+ err = mlx5_modify_scheduling_element_cmd(dev,
+ SCHEDULING_HIERARCHY_E_SWITCH,
+ &sched_ctx,
+ vport->qos.esw_tsar_ix,
+ bitmask);
+ if (err) {
+ esw_warn(esw->dev, "E-Switch modify TSAR vport element failed (vport=%d,err=%d)\n",
+ vport_num, err);
+ return err;
+ }
+
+ return 0;
+}
+
static void node_guid_gen_from_mac(u64 *node_guid, u8 mac[ETH_ALEN])
{
((u8 *)node_guid)[7] = mac[0];
@@ -1888,6 +1929,7 @@ int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
ivi->qos = evport->info.qos;
ivi->spoofchk = evport->info.spoofchk;
ivi->trusted = evport->info.trusted;
+ ivi->max_tx_rate = evport->info.max_rate;
mutex_unlock(&esw->state_lock);
return 0;
@@ -1981,6 +2023,27 @@ int mlx5_eswitch_set_vport_trust(struct mlx5_eswitch *esw,
return 0;
}
+int mlx5_eswitch_set_vport_rate(struct mlx5_eswitch *esw,
+ int vport, u32 max_rate)
+{
+ struct mlx5_vport *evport;
+ int err = 0;
+
+ if (!ESW_ALLOWED(esw))
+ return -EPERM;
+ if (!LEGAL_VPORT(esw, vport))
+ return -EINVAL;
+
+ mutex_lock(&esw->state_lock);
+ evport = &esw->vports[vport];
+ err = esw_vport_qos_config(esw, vport, max_rate);
+ if (!err)
+ evport->info.max_rate = max_rate;
+
+ mutex_unlock(&esw->state_lock);
+ return err;
+}
+
int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
int vport,
struct ifla_vf_stats *vf_stats)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index fb8de34..ddae90c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -246,6 +246,8 @@ int mlx5_eswitch_set_vport_spoofchk(struct mlx5_eswitch *esw,
int vport, bool spoofchk);
int mlx5_eswitch_set_vport_trust(struct mlx5_eswitch *esw,
int vport_num, bool setting);
+int mlx5_eswitch_set_vport_rate(struct mlx5_eswitch *esw,
+ int vport, u32 max_rate);
int mlx5_eswitch_get_vport_config(struct mlx5_eswitch *esw,
int vport, struct ifla_vf_info *ivi);
int mlx5_eswitch_get_vport_stats(struct mlx5_eswitch *esw,
--
2.7.4
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