netdev - Re: [PATCH] Pegasus: Add MAC programmability

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

Date:	Fri, 14 Aug 2009 20:21:17 +0300 (EEST)
From:	petkan@...leusys.com
To:	"Davide Rizzo" <elpa.rizzo@...il.com>
Cc:	linux-usb@...r.kernel.org, netdev@...r.kernel.org,
	petkan@...rs.sourceforge.net
Subject: Re: [PATCH] Pegasus: Add MAC programmability

Why do you have to write def_eeprom[] to the eeprom along with the new MAC
address?  This may work for 8515 based controllers, but will most likely
break everything else that antedates it.

The set address function should be much smaller/simpler and not writing to
the eeprom in general.


                  Petko


> Added capability to set mac address and to program it into EEPROM
>
> Signed-off-by: Davide Rizzo <elpa.rizzo@...il.com>
> ---
> diff -urNp linux-2.6.30.4/drivers/net/usb/pegasus.c
> linux-2.6.30.4.elpa/drivers/net/usb/pegasus.c
> --- linux-2.6.30.4/drivers/net/usb/pegasus.c	2009-08-13 07:14:57.000000000
> +0200
> +++ linux-2.6.30.4.elpa/drivers/net/usb/pegasus.c	2009-08-13
> 08:39:01.000000000 +0200
> @@ -469,8 +467,49 @@ fail:
>  		dev_warn(&pegasus->intf->dev, "%s failed\n", __func__);
>  	return -ETIMEDOUT;
>  }
> +
> +/* Got from adm 8515 starter kit */
> +static const __u16 def_eeprom[] = {
> +			  0x8515, 0x0170, 0x0082, 0x0409, 0x0000,
> +	0x07a6, 0x8515, 0x100e, 0x202a, 0x380a, 0x0000, 0x0000, 0x0000,
> +	0x030e, 0x0041, 0x0044, 0x004d, 0x0074, 0x0065, 0x006b, 0x0000,
> +	0x001e, 0x0055, 0x0053, 0x0042, 0x0020, 0x0031, 0x0030, 0x002f,
> +	0x032a, 0x0055, 0x0053, 0x0042, 0x0020, 0x0054, 0x006f, 0x0020,
> +	0x004c, 0x0041, 0x004e, 0x0020, 0x0043, 0x006f, 0x006e, 0x0076,
> +	0x0065, 0x0072, 0x0074, 0x0065, 0x0072, 0x0000, 0x0000, 0x0000,
> +	0x030a, 0x0030, 0x0030, 0x0030, 0x0031, 0x0000, 0x0000, 0x0000,
> +};
>  #endif				/* PEGASUS_WRITE_EEPROM */
>
> +static int pegasus_set_mac_address(struct net_device *netdev, void *p)
> +{
> +	struct sockaddr *addr = p;
> +	pegasus_t *pegasus = (pegasus_t *) netdev_priv(netdev);
> +	int i;
> +
> +	if (netif_running(netdev))
> +		return -EBUSY;
> +	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
> +	dbg("%s: Setting MAC address to ", netdev->name);
> +	for (i = 0; i < 5; i++)
> +		dbg("%02X:", netdev->dev_addr[i]);
> +	dbg("%02X\n", netdev->dev_addr[i]);
> +	/* Set the IDR registers. */
> +	set_registers(pegasus, EthID, 6, netdev->dev_addr);
> +#ifdef PEGASUS_WRITE_EEPROM
> +	write_eprom_word(pegasus, 0,
> +		(netdev->dev_addr[1] << 8) + netdev->dev_addr[0]);
> +	write_eprom_word(pegasus, 1,
> +		(netdev->dev_addr[3] << 8) + netdev->dev_addr[2]);
> +	write_eprom_word(pegasus, 2,
> +		(netdev->dev_addr[5] << 8) + netdev->dev_addr[4]);
> +	for (i = 0; i < ARRAY_SIZE(def_eeprom); i++)
> +		write_eprom_word(pegasus, i + 3, def_eeprom[i]);
> +
> +#endif                         /* PEGASUS_WRITE_EEPROM */
> +	return 0;
> +}
> +
>  static inline void get_node_id(pegasus_t * pegasus, __u8 * id)
>  {
>  	int i;
> @@ -1492,6 +1531,7 @@ static const struct net_device_ops pegas
>  	.ndo_start_xmit =		pegasus_start_xmit,
>  	.ndo_set_multicast_list =	pegasus_set_multicast,
>  	.ndo_get_stats =		pegasus_netdev_stats,
> +	.ndo_set_mac_address =	pegasus_set_mac_address,
>  	.ndo_tx_timeout =		pegasus_tx_timeout,
>  	.ndo_change_mtu =		eth_change_mtu,
>  	.ndo_set_mac_address =		eth_mac_addr,
>


--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html