diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 3a06c81ef85e1cccd854da645475bf047f7708dd..c819d07fbdb381c669ca39f0729b2589a404c24a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3021,11 +3021,8 @@ static int mlx5e_set_vf_rate(struct net_device *dev, int vf, int min_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);
+ max_tx_rate, min_tx_rate);
}
static int mlx5_vport_link2ifla(u8 esw_link)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
index 4b3b60be319d062bf8489457710d0390e61bf031..efa1a7a76d8a8df6e727a5728339a0647551bf2e 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.c
@@ -1415,7 +1415,7 @@ static void esw_destroy_tsar(struct mlx5_eswitch *esw)
}
static int esw_vport_enable_qos(struct mlx5_eswitch *esw, int vport_num,
- u32 initial_max_rate)
+ u32 initial_max_rate, u32 initial_bw_share)
{
u32 sched_ctx[MLX5_ST_SZ_DW(scheduling_context)] = {0};
struct mlx5_vport *vport = &esw->vports[vport_num];
@@ -1439,6 +1439,7 @@ static int esw_vport_enable_qos(struct mlx5_eswitch *esw, int vport_num,
esw->qos.root_tsar_id);
MLX5_SET(scheduling_context, &sched_ctx, max_average_bw,
initial_max_rate);
+ MLX5_SET(scheduling_context, &sched_ctx, bw_share, initial_bw_share);
err = mlx5_create_scheduling_element_cmd(dev,
SCHEDULING_HIERARCHY_E_SWITCH,
@@ -1473,7 +1474,7 @@ static void esw_vport_disable_qos(struct mlx5_eswitch *esw, int vport_num)
}
static int esw_vport_qos_config(struct mlx5_eswitch *esw, int vport_num,
- u32 max_rate)
+ u32 max_rate, u32 bw_share)
{
u32 sched_ctx[MLX5_ST_SZ_DW(scheduling_context)] = {0};
struct mlx5_vport *vport = &esw->vports[vport_num];
@@ -1497,7 +1498,9 @@ static int esw_vport_qos_config(struct mlx5_eswitch *esw, int vport_num,
esw->qos.root_tsar_id);
MLX5_SET(scheduling_context, &sched_ctx, max_average_bw,
max_rate);
+ MLX5_SET(scheduling_context, &sched_ctx, bw_share, bw_share);
bitmask |= MODIFY_SCHEDULING_ELEMENT_IN_MODIFY_BITMASK_MAX_AVERAGE_BW;
+ bitmask |= MODIFY_SCHEDULING_ELEMENT_IN_MODIFY_BITMASK_BW_SHARE;
err = mlx5_modify_scheduling_element_cmd(dev,
SCHEDULING_HIERARCHY_E_SWITCH,
@@ -1563,7 +1566,8 @@ static void esw_enable_vport(struct mlx5_eswitch *esw, int vport_num,
esw_apply_vport_conf(esw, vport);
/* Attach vport to the eswitch rate limiter */
- if (esw_vport_enable_qos(esw, vport_num, vport->info.max_rate))
+ if (esw_vport_enable_qos(esw, vport_num, vport->info.max_rate,
+ vport->qos.bw_share))
esw_warn(esw->dev, "Failed to attach vport %d to eswitch rate limiter", vport_num);
/* Sync with current vport context */
@@ -1952,6 +1956,7 @@ 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->min_tx_rate = evport->info.min_rate;
ivi->max_tx_rate = evport->info.max_rate;
mutex_unlock(&esw->state_lock);
@@ -2046,23 +2051,103 @@ 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)
+static u32 calculate_vports_min_rate_divider(struct mlx5_eswitch *esw)
{
+ u32 fw_max_bw_share = MLX5_CAP_QOS(esw->dev, max_tsar_bw_share);
struct mlx5_vport *evport;
+ u32 max_guarantee = 0;
+ int i;
+
+ for (i = 0; i <= esw->total_vports; i++) {
+ evport = &esw->vports[i];
+ if (!evport->enabled || evport->info.min_rate < max_guarantee)
+ continue;
+ max_guarantee = evport->info.min_rate;
+ }
+
+ return max_t(u32, max_guarantee / fw_max_bw_share, 1);
+}
+
+static int normalize_vports_min_rate(struct mlx5_eswitch *esw, u32 divider)
+{
+ u32 fw_max_bw_share = MLX5_CAP_QOS(esw->dev, max_tsar_bw_share);
+ struct mlx5_vport *evport;
+ u32 vport_max_rate;
+ u32 vport_min_rate;
+ u32 bw_share;
+ int err;
+ int i;
+
+ for (i = 0; i <= esw->total_vports; i++) {
+ evport = &esw->vports[i];
+ if (!evport->enabled)
+ continue;
+ vport_min_rate = evport->info.min_rate;
+ vport_max_rate = evport->info.max_rate;
+ bw_share = MLX5_MIN_BW_SHARE;
+
+ if (vport_min_rate)
+ bw_share = MLX5_RATE_TO_BW_SHARE(vport_min_rate,
+ divider,
+ fw_max_bw_share);
+
+ if (bw_share == evport->qos.bw_share)
+ continue;
+
+ err = esw_vport_qos_config(esw, i, vport_max_rate,
+ bw_share);
+ if (!err)
+ evport->qos.bw_share = bw_share;
+ else
+ return err;
+ }
+
+ return 0;
+}
+
+int mlx5_eswitch_set_vport_rate(struct mlx5_eswitch *esw, int vport,
+ u32 max_rate, u32 min_rate)
+{
+ u32 fw_max_bw_share = MLX5_CAP_QOS(esw->dev, max_tsar_bw_share);
+ bool min_rate_supported = MLX5_CAP_QOS(esw->dev, esw_bw_share) &&
+ fw_max_bw_share >= MLX5_MIN_BW_SHARE;
+ bool max_rate_supported = MLX5_CAP_QOS(esw->dev, esw_rate_limit);
+ struct mlx5_vport *evport;
+ u32 previous_min_rate;
+ u32 divider;
int err = 0;
if (!ESW_ALLOWED(esw))
return -EPERM;
if (!LEGAL_VPORT(esw, vport))
return -EINVAL;
+ if ((min_rate && !min_rate_supported) || (max_rate && !max_rate_supported))
+ return -EOPNOTSUPP;
mutex_lock(&esw->state_lock);
evport = &esw->vports[vport];
- err = esw_vport_qos_config(esw, vport, max_rate);
+
+ if (min_rate == evport->info.min_rate)
+ goto set_max_rate;
+
+ previous_min_rate = evport->info.min_rate;
+ evport->info.min_rate = min_rate;
+ divider = calculate_vports_min_rate_divider(esw);
+ err = normalize_vports_min_rate(esw, divider);
+ if (err) {
+ evport->info.min_rate = previous_min_rate;
+ goto unlock;
+ }
+
+set_max_rate:
+ if (max_rate == evport->info.max_rate)
+ goto unlock;
+
+ err = esw_vport_qos_config(esw, vport, max_rate, evport->qos.bw_share);
if (!err)
evport->info.max_rate = max_rate;
+unlock:
mutex_unlock(&esw->state_lock);
return err;
}
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
index cea1660d59ac6e5dd1d01651c7bba9ae04525e95..5b78883d565413ec59a00ecba4ddb483e4eecd3f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch.h
@@ -50,6 +50,11 @@
#define FDB_UPLINK_VPORT 0xffff
+#define MLX5_MIN_BW_SHARE 1
+
+#define MLX5_RATE_TO_BW_SHARE(rate, divider, limit) \
+ min_t(u32, max_t(u32, (rate) / (divider), MLX5_MIN_BW_SHARE), limit)
+
/* L2 -mac address based- hash helpers */
struct l2addr_node {
struct hlist_node hlist;
@@ -116,6 +121,7 @@ struct mlx5_vport_info {
u8 qos;
u64 node_guid;
int link_state;
+ u32 min_rate;
u32 max_rate;
bool spoofchk;
bool trusted;
@@ -138,6 +144,7 @@ struct mlx5_vport {
struct {
bool enabled;
u32 esw_tsar_ix;
+ u32 bw_share;
} qos;
bool enabled;
@@ -249,8 +256,8 @@ 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_set_vport_rate(struct mlx5_eswitch *esw, int vport,
+ u32 max_rate, u32 min_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,
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index d96ebc319d63a3b2a846fe8a987b7bafb796d380..a919dfb920ae60c27140823e644e685cb6e5464b 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -547,7 +547,9 @@ struct mlx5_ifc_e_switch_cap_bits {
struct mlx5_ifc_qos_cap_bits {
u8 packet_pacing[0x1];
u8 esw_scheduling[0x1];
- u8 reserved_at_2[0x1e];
+ u8 esw_bw_share[0x1];
+ u8 esw_rate_limit[0x1];
+ u8 reserved_at_4[0x1c];
u8 reserved_at_20[0x20];