linux-kernel - Re: [PATCH v8] i40e: Look up MAC address in Open Firmware or IDPROM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-Id: <20151205.231253.1057553137456534699.davem@davemloft.net>
Date:	Sat, 05 Dec 2015 23:12:53 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	sowmini.varadhan@...cle.com
Cc:	intel-wired-lan@...ts.osuosl.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, jeffrey.t.kirsher@...el.com,
	jesse.brandeburg@...el.com, shannon.nelson@...el.com,
	carolyn.wyborny@...el.com, donald.c.skidmore@...el.com,
	matthew.vick@...el.com, john.ronciak@...el.com,
	mitch.a.williams@...el.com, andy.shevchenko@...il.com
Subject: Re: [PATCH v8] i40e: Look up MAC address in Open Firmware or IDPROM

From: Sowmini Varadhan <sowmini.varadhan@...cle.com>
Date: Sat, 5 Dec 2015 15:33:00 -0500

> +static void i40e_get_platform_mac_addr(struct pci_dev *pdev, struct i40e_pf *pf)
> +{
> +	struct device_node *dp = pci_device_to_OF_node(pdev);
> +	const unsigned char *addr;
> +	u8 *mac_addr = pf->hw.mac.addr;
> +
> +	pf->flags &= ~I40E_FLAG_PF_MAC;
> +	addr = of_get_mac_address(dp);
> +	if (addr) {
> +		ether_addr_copy(mac_addr, addr);
> +		pf->flags |= I40E_FLAG_PF_MAC;
> +	}
> +#ifdef CONFIG_SPARC
> +	ether_addr_copy(mac_addr, idprom->id_ethaddr);
> +	pf->flags |= I40E_FLAG_PF_MAC;
> +#endif /* CONFIG_SPARC */
> +}

This logic doesn't look right.

If we find an address via of_get_mac_address() we should not use the
IDPROM address.  But here you are, since the IDPROM code runs
unconditionally.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/