netdev - [PATCH net-next] eth: mlx5: link NAPI instances to queues and IRQs

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Date: Tue,  6 Feb 2024 01:03:11 +0000
From: Joe Damato <jdamato@...tly.com>
To: linux-kernel@...r.kernel.org,
	netdev@...r.kernel.org
Cc: tariqt@...dia.com,
	rrameshbabu@...dia.com,
	Joe Damato <jdamato@...tly.com>,
	Saeed Mahameed <saeedm@...dia.com>,
	Leon Romanovsky <leon@...nel.org>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	linux-rdma@...r.kernel.org (open list:MELLANOX MLX5 core VPI driver)
Subject: [PATCH net-next] eth: mlx5: link NAPI instances to queues and IRQs

Make mlx5 compatible with the newly added netlink queue GET APIs.

Signed-off-by: Joe Damato <jdamato@...tly.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h      | 1 +
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 8 ++++++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 55c6ace0acd5..3f86ee1831a8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -768,6 +768,7 @@ struct mlx5e_channel {
 	u16                        qos_sqs_size;
 	u8                         num_tc;
 	u8                         lag_port;
+	unsigned int		   irq;
 
 	/* XDP_REDIRECT */
 	struct mlx5e_xdpsq         xdpsq;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index c8e8f512803e..e1bfff1fb328 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -2473,6 +2473,9 @@ static void mlx5e_close_queues(struct mlx5e_channel *c)
 	mlx5e_close_tx_cqs(c);
 	mlx5e_close_cq(&c->icosq.cq);
 	mlx5e_close_cq(&c->async_icosq.cq);
+
+	netif_queue_set_napi(c->netdev, c->ix, NETDEV_QUEUE_TYPE_TX, NULL);
+	netif_queue_set_napi(c->netdev, c->ix, NETDEV_QUEUE_TYPE_RX, NULL);
 }
 
 static u8 mlx5e_enumerate_lag_port(struct mlx5_core_dev *mdev, int ix)
@@ -2558,6 +2561,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
 	c->stats    = &priv->channel_stats[ix]->ch;
 	c->aff_mask = irq_get_effective_affinity_mask(irq);
 	c->lag_port = mlx5e_enumerate_lag_port(priv->mdev, ix);
+	c->irq		= irq;
 
 	netif_napi_add(netdev, &c->napi, mlx5e_napi_poll);
 
@@ -2602,6 +2606,10 @@ static void mlx5e_activate_channel(struct mlx5e_channel *c)
 		mlx5e_activate_xsk(c);
 	else
 		mlx5e_activate_rq(&c->rq);
+
+	netif_napi_set_irq(&c->napi, c->irq);
+	netif_queue_set_napi(c->netdev, c->ix, NETDEV_QUEUE_TYPE_TX, &c->napi);
+	netif_queue_set_napi(c->netdev, c->ix, NETDEV_QUEUE_TYPE_RX, &c->napi);
 }
 
 static void mlx5e_deactivate_channel(struct mlx5e_channel *c)
-- 
2.25.1