e1000_ethtool.c

一个2.4.21版本的嵌入式linux内核

	case E1000_DEV_ID_82543GC_FIBER:
	case E1000_DEV_ID_82543GC_COPPER:
	case E1000_DEV_ID_82544EI_FIBER:
		wol->supported = 0;
		wol->wolopts   = 0;
		return;

	case E1000_DEV_ID_82546EB_FIBER:
		/* Wake events only supported on port A for dual fiber */
		if(E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1) {
			wol->supported = 0;
			wol->wolopts   = 0;
			return;
		}
		/* Fall Through */

	default:
		wol->supported = WAKE_UCAST | WAKE_MCAST |
				 WAKE_BCAST | WAKE_MAGIC;

		wol->wolopts = 0;
		if(adapter->wol & E1000_WUFC_EX)
			wol->wolopts |= WAKE_UCAST;
		if(adapter->wol & E1000_WUFC_MC)
			wol->wolopts |= WAKE_MCAST;
		if(adapter->wol & E1000_WUFC_BC)
			wol->wolopts |= WAKE_BCAST;
		if(adapter->wol & E1000_WUFC_MAG)
			wol->wolopts |= WAKE_MAGIC;
		return;
	}
}

static int
e1000_ethtool_swol(struct e1000_adapter *adapter, struct ethtool_wolinfo *wol)
{
	struct e1000_hw *hw = &adapter->hw;

	switch(adapter->hw.device_id) {
	case E1000_DEV_ID_82542:
	case E1000_DEV_ID_82543GC_FIBER:
	case E1000_DEV_ID_82543GC_COPPER:
	case E1000_DEV_ID_82544EI_FIBER:
		return wol->wolopts ? -EOPNOTSUPP : 0;

	case E1000_DEV_ID_82546EB_FIBER:
		/* Wake events only supported on port A for dual fiber */
		if(E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)
			return wol->wolopts ? -EOPNOTSUPP : 0;
		/* Fall Through */

	default:
		if(wol->wolopts & (WAKE_PHY | WAKE_ARP | WAKE_MAGICSECURE))
			return -EOPNOTSUPP;

		adapter->wol = 0;

		if(wol->wolopts & WAKE_UCAST)
			adapter->wol |= E1000_WUFC_EX;
		if(wol->wolopts & WAKE_MCAST)
			adapter->wol |= E1000_WUFC_MC;
		if(wol->wolopts & WAKE_BCAST)
			adapter->wol |= E1000_WUFC_BC;
		if(wol->wolopts & WAKE_MAGIC)
			adapter->wol |= E1000_WUFC_MAG;
	}

	return 0;
}


/* toggle LED 4 times per second = 2 "blinks" per second */
#define E1000_ID_INTERVAL	(HZ/4)

/* bit defines for adapter->led_status */
#define E1000_LED_ON		0

static void
e1000_led_blink_callback(unsigned long data)
{
	struct e1000_adapter *adapter = (struct e1000_adapter *) data;

	if(test_and_change_bit(E1000_LED_ON, &adapter->led_status))
		e1000_led_off(&adapter->hw);
	else
		e1000_led_on(&adapter->hw);

	mod_timer(&adapter->blink_timer, jiffies + E1000_ID_INTERVAL);
}

static int
e1000_ethtool_led_blink(struct e1000_adapter *adapter, struct ethtool_value *id)
{
	if(!adapter->blink_timer.function) {
		init_timer(&adapter->blink_timer);
		adapter->blink_timer.function = e1000_led_blink_callback;
		adapter->blink_timer.data = (unsigned long) adapter;
	}

	e1000_setup_led(&adapter->hw);
	mod_timer(&adapter->blink_timer, jiffies);

	set_current_state(TASK_INTERRUPTIBLE);
	if(id->data)
		schedule_timeout(id->data * HZ);
	else
		schedule_timeout(MAX_SCHEDULE_TIMEOUT);

	del_timer_sync(&adapter->blink_timer);
	e1000_led_off(&adapter->hw);
	clear_bit(E1000_LED_ON, &adapter->led_status);
	e1000_cleanup_led(&adapter->hw);

	return 0;
}

int
e1000_ethtool_ioctl(struct net_device *netdev, struct ifreq *ifr)
{
	struct e1000_adapter *adapter = netdev->priv;
	void *addr = ifr->ifr_data;
	uint32_t cmd;

	if(get_user(cmd, (uint32_t *) addr))
		return -EFAULT;

	switch(cmd) {
	case ETHTOOL_GSET: {
		struct ethtool_cmd ecmd = {ETHTOOL_GSET};
		e1000_ethtool_gset(adapter, &ecmd);
		if(copy_to_user(addr, &ecmd, sizeof(ecmd)))
			return -EFAULT;
		return 0;
	}
	case ETHTOOL_SSET: {
		struct ethtool_cmd ecmd;
		if(!capable(CAP_NET_ADMIN))
			return -EPERM;
		if(copy_from_user(&ecmd, addr, sizeof(ecmd)))
			return -EFAULT;
		return e1000_ethtool_sset(adapter, &ecmd);
	}
	case ETHTOOL_GDRVINFO: {
		struct ethtool_drvinfo drvinfo = {ETHTOOL_GDRVINFO};
		e1000_ethtool_gdrvinfo(adapter, &drvinfo);
		if(copy_to_user(addr, &drvinfo, sizeof(drvinfo)))
			return -EFAULT;
		return 0;
	}
	case ETHTOOL_GSTRINGS: {
		struct ethtool_gstrings gstrings = { ETHTOOL_GSTRINGS };
		char *strings = NULL;

		if(copy_from_user(&gstrings, addr, sizeof(gstrings)))
			return -EFAULT;
		switch(gstrings.string_set) {
		case ETH_SS_STATS:
			gstrings.len = E1000_STATS_LEN;
			strings = *e1000_gstrings_stats;
			break;
		default:
			return -EOPNOTSUPP;
		}
		if(copy_to_user(addr, &gstrings, sizeof(gstrings)))
			return -EFAULT;
		addr += offsetof(struct ethtool_gstrings, data);
		if(copy_to_user(addr, strings,
		   gstrings.len * ETH_GSTRING_LEN))
			return -EFAULT;
		return 0;
	}
	case ETHTOOL_GREGS: {
		struct ethtool_regs regs = {ETHTOOL_GREGS};
		uint32_t regs_buff[E1000_REGS_LEN];

		if(copy_from_user(&regs, addr, sizeof(regs)))
			return -EFAULT;
		e1000_ethtool_gregs(adapter, &regs, regs_buff);
		if(copy_to_user(addr, &regs, sizeof(regs)))
			return -EFAULT;

		addr += offsetof(struct ethtool_regs, data);
		if(copy_to_user(addr, regs_buff, regs.len))
			return -EFAULT;

		return 0;
	}
	case ETHTOOL_NWAY_RST: {
		if(!capable(CAP_NET_ADMIN))
			return -EPERM;
		if(netif_running(netdev)) {
			e1000_down(adapter);
			e1000_up(adapter);
		}
		return 0;
	}
	case ETHTOOL_PHYS_ID: {
		struct ethtool_value id;
		if(copy_from_user(&id, addr, sizeof(id)))
			return -EFAULT;
		return e1000_ethtool_led_blink(adapter, &id);
	}
	case ETHTOOL_GLINK: {
		struct ethtool_value link = {ETHTOOL_GLINK};
		link.data = netif_carrier_ok(netdev);
		if(copy_to_user(addr, &link, sizeof(link)))
			return -EFAULT;
		return 0;
	}
	case ETHTOOL_GWOL: {
		struct ethtool_wolinfo wol = {ETHTOOL_GWOL};
		e1000_ethtool_gwol(adapter, &wol);
		if(copy_to_user(addr, &wol, sizeof(wol)) != 0)
			return -EFAULT;
		return 0;
	}
	case ETHTOOL_SWOL: {
		struct ethtool_wolinfo wol;
		if(!capable(CAP_NET_ADMIN))
			return -EPERM;
		if(copy_from_user(&wol, addr, sizeof(wol)) != 0)
			return -EFAULT;
		return e1000_ethtool_swol(adapter, &wol);
	}
	case ETHTOOL_GEEPROM: {
		struct ethtool_eeprom eeprom = {ETHTOOL_GEEPROM};
		struct e1000_hw *hw = &adapter->hw;
		uint16_t *eeprom_buff;
		void *ptr;
		int err = 0;

		eeprom_buff = kmalloc(hw->eeprom.word_size * 2, GFP_KERNEL);

		if(eeprom_buff == NULL)
			return -ENOMEM;

		if(copy_from_user(&eeprom, addr, sizeof(eeprom))) {
			err = -EFAULT;
			goto err_geeprom_ioctl;
		}

		if((err = e1000_ethtool_geeprom(adapter, &eeprom,
						eeprom_buff)))
			goto err_geeprom_ioctl;

		if(copy_to_user(addr, &eeprom, sizeof(eeprom))) {
			err = -EFAULT;
			goto err_geeprom_ioctl;
		}

		addr += offsetof(struct ethtool_eeprom, data);
		ptr = ((void *)eeprom_buff) + (eeprom.offset & 1);

		if(copy_to_user(addr, ptr, eeprom.len))
			err = -EFAULT;

err_geeprom_ioctl:
		kfree(eeprom_buff);
		return err;
	}
	case ETHTOOL_SEEPROM: {
		struct ethtool_eeprom eeprom;

		if(!capable(CAP_NET_ADMIN))
			return -EPERM;

		if(copy_from_user(&eeprom, addr, sizeof(eeprom)))
			return -EFAULT;

		addr += offsetof(struct ethtool_eeprom, data);
		return e1000_ethtool_seeprom(adapter, &eeprom, addr);
	}
	case ETHTOOL_GSTATS: {
		struct {
			struct ethtool_stats cmd;
			uint64_t data[E1000_STATS_LEN];
		} stats = { {ETHTOOL_GSTATS, E1000_STATS_LEN} };
		int i;

		for(i = 0; i < E1000_STATS_LEN; i++)
			stats.data[i] =
				((unsigned long *)&adapter->net_stats)[i];
		if(copy_to_user(addr, &stats, sizeof(stats)))
			return -EFAULT;
		return 0;
	}
	default:
		return -EOPNOTSUPP;
	}
}