mlx4: Add support for persistent NAPI config to RX CQs

JIRA: https://issues.redhat.com/browse/RHEL-77816
Upstream Status: net.git commit c9191ea

commit c9191ea
Author: Joe Damato <jdamato@fastly.com>
Date:   Fri Oct 11 18:45:04 2024 +0000

    mlx4: Add support for persistent NAPI config to RX CQs

    Use netif_napi_add_config to assign persistent per-NAPI config when
    initializing RX CQ NAPIs.

    Presently, struct napi_config only has support for two fields used for
    RX, so there is no need to support them with TX CQs, yet.

    Signed-off-by: Joe Damato <jdamato@fastly.com>
    Reviewed-by: Eric Dumazet <edumazet@google.com>
    Reviewed-by: Jakub Kicinski <kuba@kernel.org>
    Link: https://patch.msgid.link/20241011184527.16393-10-jdamato@fastly.com
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>

Signed-off-by: Davide Caratti <dcaratti@redhat.com>

Author: dcaratti

drivers/net/ethernet/mellanox/mlx4/en_cq.c

@@ -156,7 +156,8 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
 		break;
 	case RX:
 		cq->mcq.comp = mlx4_en_rx_irq;
-		netif_napi_add(cq->dev, &cq->napi, mlx4_en_poll_rx_cq);
+		netif_napi_add_config(cq->dev, &cq->napi, mlx4_en_poll_rx_cq,
+				      cq_idx);
 		netif_napi_set_irq(&cq->napi, irq);
 		napi_enable(&cq->napi);
 		netif_queue_set_napi(cq->dev, cq_idx, NETDEV_QUEUE_TYPE_RX, &cq->napi);