On Thu, Feb 08, 2024 at 09:13:25PM +0200, Tariq Toukan wrote:
>
>
> On 08/02/2024 5:07, Joe Damato wrote:
> >Make mlx5 compatible with the newly added netlink queue GET APIs.
> >
> >Signed-off-by: Joe Damato <jdamato@xxxxxxxxxx>
> >---
> >v2 -> v3:
> > - Fix commit message subject
> > - call netif_queue_set_napi in mlx5e_ptp_activate_channel and
> > mlx5e_ptp_deactivate_channel to enable/disable NETDEV_QUEUE_TYPE_RX for
> > the PTP channel.
> > - Modify mlx5e_activate_txqsq and mlx5e_deactivate_txqsq to set
> > NETDEV_QUEUE_TYPE_TX which should take care of all TX queues including
> > QoS/HTB and PTP.
> > - Rearrange mlx5e_activate_channel and mlx5e_deactivate_channel for
> > better ordering when setting and unsetting NETDEV_QUEUE_TYPE_RX NAPI
> > structs
> >
> >v1 -> v2:
> > - Move netlink NULL code to mlx5e_deactivate_channel
> > - Move netif_napi_set_irq to mlx5e_open_channel and avoid storing the
> > irq, after netif_napi_add which itself sets the IRQ to -1
> >
> > drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c | 3 +++
> > drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 7 +++++++
> > 2 files changed, 10 insertions(+)
> >
> >diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c
> >index 078f56a3cbb2..fbbc287d924d 100644
> >--- a/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c
> >+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/ptp.c
> >@@ -927,6 +927,8 @@ void mlx5e_ptp_activate_channel(struct mlx5e_ptp *c)
> > int tc;
> > napi_enable(&c->napi);
> >+ netif_queue_set_napi(c->netdev, c->rq.ix, NETDEV_QUEUE_TYPE_RX,
> >+ &c->napi);
> > if (test_bit(MLX5E_PTP_STATE_TX, c->state)) {
> > for (tc = 0; tc < c->num_tc; tc++)
> >@@ -951,6 +953,7 @@ void mlx5e_ptp_deactivate_channel(struct mlx5e_ptp *c)
> > mlx5e_deactivate_txqsq(&c->ptpsq[tc].txqsq);
> > }
> >+ netif_queue_set_napi(c->netdev, c->rq.ix, NETDEV_QUEUE_TYPE_RX, NULL);
> > napi_disable(&c->napi);
> > }
> >diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> >index c8e8f512803e..2f1792854dd5 100644
> >--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> >+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
> >@@ -1806,6 +1806,7 @@ void mlx5e_activate_txqsq(struct mlx5e_txqsq *sq)
> > set_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
> > netdev_tx_reset_queue(sq->txq);
> > netif_tx_start_queue(sq->txq);
> >+ netif_queue_set_napi(sq->channel->netdev, sq->txq_ix, NETDEV_QUEUE_TYPE_TX, &sq->channel->napi);
>
> Might be called with channel==NULL.
> For example for PTP.
>
> Prefer sq->netdev and sq->cq.napi.
OK, I'll make that change for the v4 which I'll send sometime tomorrow.
Thanks.
> > }
> > void mlx5e_tx_disable_queue(struct netdev_queue *txq)
> >@@ -1819,6 +1820,7 @@ void mlx5e_deactivate_txqsq(struct mlx5e_txqsq *sq)
> > {
> > struct mlx5_wq_cyc *wq = &sq->wq;
> >+ netif_queue_set_napi(sq->channel->netdev, sq->txq_ix, NETDEV_QUEUE_TYPE_TX, NULL);
>
> Same here.
>
> > clear_bit(MLX5E_SQ_STATE_ENABLED, &sq->state);
> > synchronize_net(); /* Sync with NAPI to prevent netif_tx_wake_queue. */
> >@@ -2560,6 +2562,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
> > c->lag_port = mlx5e_enumerate_lag_port(priv->mdev, ix);
> > netif_napi_add(netdev, &c->napi, mlx5e_napi_poll);
> >+ netif_napi_set_irq(&c->napi, irq);
> > err = mlx5e_open_queues(c, params, cparam);
> > if (unlikely(err))
> >@@ -2602,12 +2605,16 @@ static void mlx5e_activate_channel(struct mlx5e_channel *c)
> > mlx5e_activate_xsk(c);
> > else
> > mlx5e_activate_rq(&c->rq);
> >+
> >+ netif_queue_set_napi(c->netdev, c->ix, NETDEV_QUEUE_TYPE_RX, &c->napi);
> > }
> > static void mlx5e_deactivate_channel(struct mlx5e_channel *c)
> > {
> > int tc;
> >+ netif_queue_set_napi(c->netdev, c->ix, NETDEV_QUEUE_TYPE_RX, NULL);
> >+
> > if (test_bit(MLX5E_CHANNEL_STATE_XSK, c->state))
> > mlx5e_deactivate_xsk(c);
> > else
