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net/mlx5e: Minimize mlx5e_{open/close}_locked

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mlx5e_redirect_rqts_to_{channels,drop} and mlx5e_{add,del}_sqs_fwd_rules
and Set real num tx/rx queues belong to
mlx5e_{activate,deactivate}_priv_channels, for that we move those functions
and minimize mlx5e_open/close flows.

This will be needed in downstream patches to replace old channels with new
ones without the need to call mlx5e_close/open.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
This commit is contained in:
Saeed Mahameed 2017-02-07 16:35:49 +02:00
parent a43b25daef
commit 9008ae0748
2 changed files with 26 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/net/ethernet/mellanox/mlx5/core/en_main.c
View File

@ -2498,14 +2498,33 @@ static void mlx5e_build_channels_tx_maps(struct mlx5e_priv *priv)
static void mlx5e_activate_priv_channels(struct mlx5e_priv *priv)
{
int num_txqs = priv->channels.num * priv->channels.params.num_tc;
struct net_device *netdev = priv->netdev;
mlx5e_netdev_set_tcs(netdev);
if (netdev->real_num_tx_queues != num_txqs)
netif_set_real_num_tx_queues(netdev, num_txqs);
if (netdev->real_num_rx_queues != priv->channels.num)
netif_set_real_num_rx_queues(netdev, priv->channels.num);
mlx5e_build_channels_tx_maps(priv);
mlx5e_activate_channels(&priv->channels);
netif_tx_start_all_queues(priv->netdev);
if (MLX5_CAP_GEN(priv->mdev, vport_group_manager))
mlx5e_add_sqs_fwd_rules(priv);
mlx5e_wait_channels_min_rx_wqes(&priv->channels);
mlx5e_redirect_rqts_to_channels(priv, &priv->channels);
}
static void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv)
{
mlx5e_redirect_rqts_to_drop(priv);
if (MLX5_CAP_GEN(priv->mdev, vport_group_manager))
mlx5e_remove_sqs_fwd_rules(priv);
/* FIXME: This is a W/A only for tx timeout watch dog false alarm when
* polling for inactive tx queues.
*/
@ -2517,40 +2536,24 @@ static void mlx5e_deactivate_priv_channels(struct mlx5e_priv *priv)
int mlx5e_open_locked(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
int num_txqs;
int err;
set_bit(MLX5E_STATE_OPENED, &priv->state);
mlx5e_netdev_set_tcs(netdev);
num_txqs = priv->channels.params.num_channels * priv->channels.params.num_tc;
netif_set_real_num_tx_queues(netdev, num_txqs);
netif_set_real_num_rx_queues(netdev, priv->channels.params.num_channels);
err = mlx5e_open_channels(priv, &priv->channels);
if (err)
goto err_clear_state_opened_flag;
mlx5e_refresh_tirs(priv, false);
mlx5e_activate_priv_channels(priv);
mlx5e_redirect_rqts_to_channels(priv, &priv->channels);
mlx5e_update_carrier(priv);
mlx5e_timestamp_init(priv);
if (priv->profile->update_stats)
queue_delayed_work(priv->wq, &priv->update_stats_work, 0);
if (MLX5_CAP_GEN(mdev, vport_group_manager)) {
err = mlx5e_add_sqs_fwd_rules(priv);
if (err)
goto err_close_channels;
}
return 0;
err_close_channels:
mlx5e_close_channels(&priv->channels);
err_clear_state_opened_flag:
clear_bit(MLX5E_STATE_OPENED, &priv->state);
return err;
@ -2571,7 +2574,6 @@ int mlx5e_open(struct net_device *netdev)
int mlx5e_close_locked(struct net_device *netdev)
{
struct mlx5e_priv *priv = netdev_priv(netdev);
struct mlx5_core_dev *mdev = priv->mdev;
/* May already be CLOSED in case a previous configuration operation
* (e.g RX/TX queue size change) that involves close&open failed.
@ -2581,12 +2583,8 @@ int mlx5e_close_locked(struct net_device *netdev)
clear_bit(MLX5E_STATE_OPENED, &priv->state);
if (MLX5_CAP_GEN(mdev, vport_group_manager))
mlx5e_remove_sqs_fwd_rules(priv);
mlx5e_timestamp_cleanup(priv);
netif_carrier_off(priv->netdev);
mlx5e_redirect_rqts_to_drop(priv);
mlx5e_deactivate_priv_channels(priv);
mlx5e_close_channels(&priv->channels);

10
drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
View File

@ -189,12 +189,13 @@ int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
struct mlx5_eswitch_rep *rep = priv->ppriv;
struct mlx5e_channel *c;
int n, tc, err, num_sqs = 0;
int n, tc, num_sqs = 0;
int err = -ENOMEM;
u16 *sqs;
sqs = kcalloc(priv->channels.num * priv->channels.params.num_tc, sizeof(u16), GFP_KERNEL);
if (!sqs)
return -ENOMEM;
goto out;
for (n = 0; n < priv->channels.num; n++) {
c = priv->channels.c[n];
@ -203,8 +204,11 @@ int mlx5e_add_sqs_fwd_rules(struct mlx5e_priv *priv)
}
err = mlx5_eswitch_sqs2vport_start(esw, rep, sqs, num_sqs);
kfree(sqs);
out:
if (err)
netdev_warn(priv->netdev, "Failed to add SQs FWD rules %d\n", err);
return err;
}