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net/mlx5: Add SRIOV VF max rate configuration support

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Implement the vf set rate ndo by modifying the TSAR vport rate limit.

Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Mohamad Haj Yahia 2016-08-11 11:28:21 +03:00 committed by Leon Romanovsky
parent 1bd27b11c1
commit bd77bf1cb5
3 changed files with 80 additions and 0 deletions
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15
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -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,

63
drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
View File

@ -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)

2
drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
View File

@ -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,