netdev - Re: [RFC net-next 1/1] hv_netvsc: Link queues to NAPIs

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Message-ID: <20240926151024.GE4029621@kernel.org>
Date: Thu, 26 Sep 2024 16:10:24 +0100
From: Simon Horman <horms@...nel.org>
To: Joe Damato <jdamato@...tly.com>
Cc: netdev@...r.kernel.org, "K. Y. Srinivasan" <kys@...rosoft.com>,
	Haiyang Zhang <haiyangz@...rosoft.com>,
	Wei Liu <wei.liu@...nel.org>, Dexuan Cui <decui@...rosoft.com>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	"open list:Hyper-V/Azure CORE AND DRIVERS" <linux-hyperv@...r.kernel.org>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [RFC net-next 1/1] hv_netvsc: Link queues to NAPIs

On Tue, Sep 24, 2024 at 11:48:51PM +0000, Joe Damato wrote:
> Use netif_queue_set_napi to link queues to NAPI instances so that they
> can be queried with netlink.
> 
> Signed-off-by: Joe Damato <jdamato@...tly.com>
> ---
>  drivers/net/hyperv/netvsc.c       | 11 ++++++++++-
>  drivers/net/hyperv/rndis_filter.c |  9 +++++++--
>  2 files changed, 17 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
> index 2b6ec979a62f..ccaa4690dba0 100644
> --- a/drivers/net/hyperv/netvsc.c
> +++ b/drivers/net/hyperv/netvsc.c
> @@ -712,8 +712,11 @@ void netvsc_device_remove(struct hv_device *device)
>  	for (i = 0; i < net_device->num_chn; i++) {
>  		/* See also vmbus_reset_channel_cb(). */
>  		/* only disable enabled NAPI channel */
> -		if (i < ndev->real_num_rx_queues)
> +		if (i < ndev->real_num_rx_queues) {
> +			netif_queue_set_napi(ndev, i, NETDEV_QUEUE_TYPE_TX, NULL);
> +			netif_queue_set_napi(ndev, i, NETDEV_QUEUE_TYPE_RX, NULL);

Hi Joe,

When you post a non-RFC version of this patch, could you consider
line-wrapping the above to 80 columns, as is still preferred for
Networking code?

There is an option to checkpatch that will warn you about this.

...