netdev - Re: [PATCH net-next v2 10/10] bnxt_en: Implement .ndo_features

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Date:   Mon, 26 Apr 2021 09:29:35 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Michael Chan <michael.chan@...adcom.com>
Cc:     davem@...emloft.net, netdev@...r.kernel.org, gospo@...adcom.com
Subject: Re: [PATCH net-next v2 10/10] bnxt_en: Implement
 .ndo_features_check().

On Sun, 25 Apr 2021 13:45:27 -0400 Michael Chan wrote:
> +	if (l4_proto != IPPROTO_UDP)
> +		return features;

This should have been "features & ~(CSUM | GSO)" if you actually
accepted my feedback. I mentioned extension headers as an example, 
v2 looks like a minor refactoring, no functional changes :/

> +	bp = netdev_priv(dev);
> +	/* For UDP, we can only handle 1 Vxlan port and 1 Geneve port. */
> +	udp_port = udp_hdr(skb)->dest;
> +	if (udp_port == bp->vxlan_port || udp_port == bp->nge_port)
> +		return features;
> +	return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);