linux-kernel - Re: [PATCH net-next v4 09/12] net: ethernet: oa_tc6: implement receive path to receive rx ethernet frames

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Date: Wed, 24 Apr 2024 02:08:31 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Parthiban Veerasooran <Parthiban.Veerasooran@...rochip.com>
Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
	pabeni@...hat.com, horms@...nel.org, saeedm@...dia.com,
	anthony.l.nguyen@...el.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, corbet@....net,
	linux-doc@...r.kernel.org, robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
	devicetree@...r.kernel.org, horatiu.vultur@...rochip.com,
	ruanjinjie@...wei.com, steen.hegelund@...rochip.com,
	vladimir.oltean@....com, UNGLinuxDriver@...rochip.com,
	Thorsten.Kummermehr@...rochip.com, Pier.Beruto@...emi.com,
	Selvamani.Rajagopal@...emi.com, Nicolas.Ferre@...rochip.com,
	benjamin.bigler@...nformulastudent.ch
Subject: Re: [PATCH net-next v4 09/12] net: ethernet: oa_tc6: implement
 receive path to receive rx ethernet frames

> +static int oa_tc6_allocate_rx_skb(struct oa_tc6 *tc6)
> +{
> +	tc6->rx_skb = netdev_alloc_skb(tc6->netdev, tc6->netdev->mtu + ETH_HLEN +
> +				       ETH_FCS_LEN + NET_IP_ALIGN);
> +	if (!tc6->rx_skb) {
> +		tc6->netdev->stats.rx_dropped++;
> +		return -ENOMEM;
> +	}
> +	skb_reserve(tc6->rx_skb, NET_IP_ALIGN);

I think you can use netdev_alloc_skb_ip_align() here.