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Date: Sun, 17 Jul 2022 14:33:40 -0700
From: Saeed Mahameed <saeed@...nel.org>
To: "David S. Miller" <davem@...emloft.net>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Eric Dumazet <edumazet@...gle.com>
Cc: Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
Tariq Toukan <tariqt@...dia.com>, Moshe Tal <moshet@...dia.com>
Subject: [net-next 02/14] net/mlx5e: Fix mqprio_rl handling on devlink reload
From: Moshe Tal <moshet@...dia.com>
Keep mqprio_rl data to params and restore the configuration in case of
devlink reload.
Change the location of mqprio_rl resources cleanup so it will be done
also in reload flow.
Also, remove the rl pointer from the params, since this is dynamic object
and saved to priv.
Signed-off-by: Moshe Tal <moshet@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 3 +-
.../net/ethernet/mellanox/mlx5/core/en_main.c | 144 +++++++++++++-----
2 files changed, 106 insertions(+), 41 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index da10061d0c03..5c88c3896b96 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -321,7 +321,8 @@ struct mlx5e_params {
u8 num_tc;
struct netdev_tc_txq tc_to_txq[TC_MAX_QUEUE];
struct {
- struct mlx5e_mqprio_rl *rl;
+ u64 max_rate[TC_MAX_QUEUE];
+ u32 hw_id[TC_MAX_QUEUE];
} channel;
} mqprio;
bool rx_cqe_compress_def;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index cac4022ba7f3..fe07180a957a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1912,8 +1912,7 @@ static int mlx5e_txq_get_qos_node_hw_id(struct mlx5e_params *params, int txq_ix,
{
int tc;
- if (params->mqprio.mode != TC_MQPRIO_MODE_CHANNEL ||
- !params->mqprio.channel.rl) {
+ if (params->mqprio.mode != TC_MQPRIO_MODE_CHANNEL) {
*hw_id = 0;
return 0;
}
@@ -1922,7 +1921,14 @@ static int mlx5e_txq_get_qos_node_hw_id(struct mlx5e_params *params, int txq_ix,
if (tc < 0)
return tc;
- return mlx5e_mqprio_rl_get_node_hw_id(params->mqprio.channel.rl, tc, hw_id);
+ if (tc >= params->mqprio.num_tc) {
+ WARN(1, "Unexpected TCs configuration. tc %d is out of range of %u",
+ tc, params->mqprio.num_tc);
+ return -EINVAL;
+ }
+
+ *hw_id = params->mqprio.channel.hw_id[tc];
+ return 0;
}
static int mlx5e_open_sqs(struct mlx5e_channel *c,
@@ -2615,13 +2621,6 @@ static int mlx5e_update_netdev_queues(struct mlx5e_priv *priv)
netdev_warn(netdev, "netif_set_real_num_rx_queues failed, %d\n", err);
goto err_txqs;
}
- if (priv->mqprio_rl != priv->channels.params.mqprio.channel.rl) {
- if (priv->mqprio_rl) {
- mlx5e_mqprio_rl_cleanup(priv->mqprio_rl);
- mlx5e_mqprio_rl_free(priv->mqprio_rl);
- }
- priv->mqprio_rl = priv->channels.params.mqprio.channel.rl;
- }
return 0;
@@ -3135,6 +3134,11 @@ int mlx5e_create_tises(struct mlx5e_priv *priv)
static void mlx5e_cleanup_nic_tx(struct mlx5e_priv *priv)
{
+ if (priv->mqprio_rl) {
+ mlx5e_mqprio_rl_cleanup(priv->mqprio_rl);
+ mlx5e_mqprio_rl_free(priv->mqprio_rl);
+ priv->mqprio_rl = NULL;
+ }
mlx5e_destroy_tises(priv);
}
@@ -3203,19 +3207,38 @@ static void mlx5e_params_mqprio_dcb_set(struct mlx5e_params *params, u8 num_tc)
{
params->mqprio.mode = TC_MQPRIO_MODE_DCB;
params->mqprio.num_tc = num_tc;
- params->mqprio.channel.rl = NULL;
mlx5e_mqprio_build_default_tc_to_txq(params->mqprio.tc_to_txq, num_tc,
params->num_channels);
}
+static void mlx5e_mqprio_rl_update_params(struct mlx5e_params *params,
+ struct mlx5e_mqprio_rl *rl)
+{
+ int tc;
+
+ for (tc = 0; tc < TC_MAX_QUEUE; tc++) {
+ u32 hw_id = 0;
+
+ if (rl)
+ mlx5e_mqprio_rl_get_node_hw_id(rl, tc, &hw_id);
+ params->mqprio.channel.hw_id[tc] = hw_id;
+ }
+}
+
static void mlx5e_params_mqprio_channel_set(struct mlx5e_params *params,
- struct tc_mqprio_qopt *qopt,
+ struct tc_mqprio_qopt_offload *mqprio,
struct mlx5e_mqprio_rl *rl)
{
+ int tc;
+
params->mqprio.mode = TC_MQPRIO_MODE_CHANNEL;
- params->mqprio.num_tc = qopt->num_tc;
- params->mqprio.channel.rl = rl;
- mlx5e_mqprio_build_tc_to_txq(params->mqprio.tc_to_txq, qopt);
+ params->mqprio.num_tc = mqprio->qopt.num_tc;
+
+ for (tc = 0; tc < TC_MAX_QUEUE; tc++)
+ params->mqprio.channel.max_rate[tc] = mqprio->max_rate[tc];
+
+ mlx5e_mqprio_rl_update_params(params, rl);
+ mlx5e_mqprio_build_tc_to_txq(params->mqprio.tc_to_txq, &mqprio->qopt);
}
static void mlx5e_params_mqprio_reset(struct mlx5e_params *params)
@@ -3241,6 +3264,12 @@ static int mlx5e_setup_tc_mqprio_dcb(struct mlx5e_priv *priv,
err = mlx5e_safe_switch_params(priv, &new_params,
mlx5e_num_channels_changed_ctx, NULL, true);
+ if (!err && priv->mqprio_rl) {
+ mlx5e_mqprio_rl_cleanup(priv->mqprio_rl);
+ mlx5e_mqprio_rl_free(priv->mqprio_rl);
+ priv->mqprio_rl = NULL;
+ }
+
priv->max_opened_tc = max_t(u8, priv->max_opened_tc,
mlx5e_get_dcb_num_tc(&priv->channels.params));
return err;
@@ -3299,16 +3328,38 @@ static int mlx5e_mqprio_channel_validate(struct mlx5e_priv *priv,
return 0;
}
-static bool mlx5e_mqprio_rate_limit(struct tc_mqprio_qopt_offload *mqprio)
+static bool mlx5e_mqprio_rate_limit(u8 num_tc, u64 max_rate[])
{
int tc;
- for (tc = 0; tc < mqprio->qopt.num_tc; tc++)
- if (mqprio->max_rate[tc])
+ for (tc = 0; tc < num_tc; tc++)
+ if (max_rate[tc])
return true;
return false;
}
+static struct mlx5e_mqprio_rl *mlx5e_mqprio_rl_create(struct mlx5_core_dev *mdev,
+ u8 num_tc, u64 max_rate[])
+{
+ struct mlx5e_mqprio_rl *rl;
+ int err;
+
+ if (!mlx5e_mqprio_rate_limit(num_tc, max_rate))
+ return NULL;
+
+ rl = mlx5e_mqprio_rl_alloc();
+ if (!rl)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx5e_mqprio_rl_init(rl, mdev, num_tc, max_rate);
+ if (err) {
+ mlx5e_mqprio_rl_free(rl);
+ return ERR_PTR(err);
+ }
+
+ return rl;
+}
+
static int mlx5e_setup_tc_mqprio_channel(struct mlx5e_priv *priv,
struct tc_mqprio_qopt_offload *mqprio)
{
@@ -3322,32 +3373,32 @@ static int mlx5e_setup_tc_mqprio_channel(struct mlx5e_priv *priv,
if (err)
return err;
- rl = NULL;
- if (mlx5e_mqprio_rate_limit(mqprio)) {
- rl = mlx5e_mqprio_rl_alloc();
- if (!rl)
- return -ENOMEM;
- err = mlx5e_mqprio_rl_init(rl, priv->mdev, mqprio->qopt.num_tc,
- mqprio->max_rate);
- if (err) {
- mlx5e_mqprio_rl_free(rl);
- return err;
- }
- }
+ rl = mlx5e_mqprio_rl_create(priv->mdev, mqprio->qopt.num_tc, mqprio->max_rate);
+ if (IS_ERR(rl))
+ return PTR_ERR(rl);
new_params = priv->channels.params;
- mlx5e_params_mqprio_channel_set(&new_params, &mqprio->qopt, rl);
+ mlx5e_params_mqprio_channel_set(&new_params, mqprio, rl);
nch_changed = mlx5e_get_dcb_num_tc(&priv->channels.params) > 1;
preactivate = nch_changed ? mlx5e_num_channels_changed_ctx :
mlx5e_update_netdev_queues_ctx;
err = mlx5e_safe_switch_params(priv, &new_params, preactivate, NULL, true);
- if (err && rl) {
- mlx5e_mqprio_rl_cleanup(rl);
- mlx5e_mqprio_rl_free(rl);
+ if (err) {
+ if (rl) {
+ mlx5e_mqprio_rl_cleanup(rl);
+ mlx5e_mqprio_rl_free(rl);
+ }
+ return err;
}
- return err;
+ if (priv->mqprio_rl) {
+ mlx5e_mqprio_rl_cleanup(priv->mqprio_rl);
+ mlx5e_mqprio_rl_free(priv->mqprio_rl);
+ }
+ priv->mqprio_rl = rl;
+
+ return 0;
}
static int mlx5e_setup_tc_mqprio(struct mlx5e_priv *priv,
@@ -5102,6 +5153,23 @@ static void mlx5e_cleanup_nic_rx(struct mlx5e_priv *priv)
priv->rx_res = NULL;
}
+static void mlx5e_set_mqprio_rl(struct mlx5e_priv *priv)
+{
+ struct mlx5e_params *params;
+ struct mlx5e_mqprio_rl *rl;
+
+ params = &priv->channels.params;
+ if (params->mqprio.mode != TC_MQPRIO_MODE_CHANNEL)
+ return;
+
+ rl = mlx5e_mqprio_rl_create(priv->mdev, params->mqprio.num_tc,
+ params->mqprio.channel.max_rate);
+ if (IS_ERR(rl))
+ rl = NULL;
+ priv->mqprio_rl = rl;
+ mlx5e_mqprio_rl_update_params(params, rl);
+}
+
static int mlx5e_init_nic_tx(struct mlx5e_priv *priv)
{
int err;
@@ -5112,6 +5180,7 @@ static int mlx5e_init_nic_tx(struct mlx5e_priv *priv)
return err;
}
+ mlx5e_set_mqprio_rl(priv);
mlx5e_dcbnl_initialize(priv);
return 0;
}
@@ -5346,11 +5415,6 @@ void mlx5e_priv_cleanup(struct mlx5e_priv *priv)
kfree(priv->htb.qos_sq_stats[i]);
kvfree(priv->htb.qos_sq_stats);
- if (priv->mqprio_rl) {
- mlx5e_mqprio_rl_cleanup(priv->mqprio_rl);
- mlx5e_mqprio_rl_free(priv->mqprio_rl);
- }
-
memset(priv, 0, sizeof(*priv));
}
--
2.36.1
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