netdev - Re: [PATCH net-next v4 13/14] netkit: Add io

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Message-ID: <20251106164347.2ffdf8d0@kernel.org>
Date: Thu, 6 Nov 2025 16:43:47 -0800
From: Jakub Kicinski <kuba@...nel.org>
To: Daniel Borkmann <daniel@...earbox.net>
Cc: netdev@...r.kernel.org, bpf@...r.kernel.org, davem@...emloft.net,
 razor@...ckwall.org, pabeni@...hat.com, willemb@...gle.com,
 sdf@...ichev.me, john.fastabend@...il.com, martin.lau@...nel.org,
 jordan@...fe.io, maciej.fijalkowski@...el.com, magnus.karlsson@...el.com,
 dw@...idwei.uk, toke@...hat.com, yangzhenze@...edance.com,
 wangdongdong.6@...edance.com
Subject: Re: [PATCH net-next v4 13/14] netkit: Add io_uring zero-copy
 support for TCP

On Fri, 31 Oct 2025 22:21:02 +0100 Daniel Borkmann wrote:
> +static struct device *netkit_queue_get_dma_dev(struct net_device *dev, int idx)
> +{
> +	struct netdev_rx_queue *rxq, *peer_rxq;
> +	unsigned int peer_idx;
> +
> +	rxq = __netif_get_rx_queue(dev, idx);
> +	if (!rxq->peer)
> +		return NULL;
> +
> +	peer_rxq = rxq->peer;
> +	peer_idx = get_netdev_rx_queue_index(peer_rxq);
> +
> +	return netdev_queue_get_dma_dev(peer_rxq->dev, peer_idx);
> +}

Doesn't look netkit specific at all, let's move it into the core
helper.