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From: Vladimir Oltean <olteanv@gmail.com>
To: Romain Gantois <romain.gantois@bootlin.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>,
	Jose Abreu <joabreu@synopsys.com>,
	"David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Maxime Chevallier <maxime.chevallier@bootlin.com>,
	Sylvain Girard <sylvain.girard@se.com>,
	Andrew Lunn <andrew@lunn.ch>,
	Pascal EBERHARD <pascal.eberhard@se.com>,
	Richard Tresidder <rtresidd@electromag.com.au>,
	Linus Walleij <linus.walleij@linaro.org>,
	netdev@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com,
	linux-arm-kernel@lists.infradead.org, stable@vger.kernel.org
Subject: Re: [PATCH net v2 1/1] net: stmmac: Prevent DSA tags from breaking COE on stmmac
Date: Wed, 3 Jan 2024 22:10:21 +0200	[thread overview]
Message-ID: <20240103201021.2ixxndfqe622afnf@skbuf> (raw)
In-Reply-To: <20240102162718.268271-2-romain.gantois@bootlin.com> <20240102162718.268271-2-romain.gantois@bootlin.com>

On Tue, Jan 02, 2024 at 05:27:15PM +0100, Romain Gantois wrote:
> +/* Check if ethertype will trigger IP
> + * header checks/COE in hardware
> + */
> +static inline bool stmmac_has_ip_ethertype(struct sk_buff *skb)
> +{
> +	__be16 proto = eth_header_parse_protocol(skb);
> +
> +	return (proto == htons(ETH_P_IP)) || (proto == htons(ETH_P_IPV6)) ||
> +		(proto == htons(ETH_P_8021Q));

proto == htons(ETH_P_8021Q) means that the skb has an IP EtherType?
What if an IP header does not follow after the VLAN header?

> +}

  parent reply	other threads:[~2024-01-03 20:10 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-02 16:27 [PATCH net v2 0/1] Prevent DSA tags from breaking COE Romain Gantois
2024-01-02 16:27 ` [PATCH net v2 1/1] net: stmmac: Prevent DSA tags from breaking COE on stmmac Romain Gantois
2024-01-02 20:26   ` Florian Fainelli
2024-01-03  8:40     ` Romain Gantois
2024-01-02 20:27   ` Linus Walleij
2024-01-03  9:11     ` Romain Gantois
2024-01-03 16:42       ` Linus Walleij
2024-01-03 20:10   ` Vladimir Oltean [this message]
2024-01-03 22:25     ` Linus Walleij

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