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net/mlx5e: Fix mqprio_rl handling on devlink reload

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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@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Moshe Tal 2022-05-04 16:00:28 +03:00 • committed by Saeed Mahameed
parent 07071e47da
commit 0bb7228f70
2 changed files with 106 additions and 41 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en.h
View file

@ -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;

142
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View file

@ -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 @@ err_close_tises:
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_params_mqprio_channel_set(struct mlx5e_params *params,
struct tc_mqprio_qopt *qopt,
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_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)
{
@ -3322,34 +3373,34 @@ 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) {
if (err) {
if (rl) {
mlx5e_mqprio_rl_cleanup(rl);
mlx5e_mqprio_rl_free(rl);
}
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,
struct tc_mqprio_qopt_offload *mqprio)
{
@ -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));
}