C++ (Cpp) mv_eth_change_mtu_internals示例

示例#1

文件： mv_ethernet.c 项目： sniperpr/linux-smileplug

int mv_eth_change_mtu(struct net_device *dev, int mtu)
{
	int old_mtu = dev->mtu;

	mtu = mv_eth_check_mtu_valid(dev, mtu);
	if (mtu < 0)
		return -EINVAL;

	if (!netif_running(dev)) {
		if (mv_eth_change_mtu_internals(dev, mtu) == -1)
			goto error;

		printk(KERN_NOTICE "%s: change mtu %d (buffer-size %d) to %d (buffer-size %d)\n",
				dev->name, old_mtu, RX_PKT_SIZE(old_mtu),
				dev->mtu, RX_PKT_SIZE(dev->mtu));
		return 0;
	}

	if (mv_eth_check_mtu_internals(dev, mtu))
		goto error;

	if (mv_eth_stop(dev)) {
		printk(KERN_ERR "%s: stop interface failed\n", dev->name);
		goto error;
	}

	if (mv_eth_change_mtu_internals(dev, mtu) == -1) {
		printk(KERN_ERR "%s change mtu internals failed\n", dev->name);
		goto error;
	}

	if (mv_eth_start(dev)) {
		printk(KERN_ERR "%s: start interface failed\n", dev->name);
		goto error;
	}
	printk(KERN_NOTICE "%s: change mtu %d (buffer-size %d) to %d (buffer-size %d)\n",
				dev->name, old_mtu, RX_PKT_SIZE(old_mtu), dev->mtu,
				RX_PKT_SIZE(dev->mtu));
	return 0;

error:
	printk(KERN_ERR "%s: change mtu failed\n", dev->name);
	return -1;
}

示例#2

文件： mv_ethernet.c 项目： KevinCabana/xpenology

int mv_eth_change_mtu( struct net_device *dev, int mtu )
{
    int old_mtu = dev->mtu;

    if(!netif_running(dev)) {
    	if(mv_eth_change_mtu_internals(dev, mtu) == -1) {
            goto error;
    }
        printk( KERN_NOTICE "%s: change mtu %d (buffer-size %d) to %d (buffer-size %d)\n",
                dev->name, old_mtu, MV_RX_BUF_SIZE( old_mtu), 
                dev->mtu, MV_RX_BUF_SIZE( dev->mtu) );
        return 0;
    }

    if( mv_eth_stop( dev )) {
        printk( KERN_ERR "%s: stop interface failed\n", dev->name );
        goto error;
    }

    if(mv_eth_change_mtu_internals(dev, mtu) == -1) {
        goto error;
    }

    if(mv_eth_start( dev )) {
        printk( KERN_ERR "%s: start interface failed\n", dev->name );
        goto error;
    } 
    printk( KERN_NOTICE "%s: change mtu %d (buffer-size %d) to %d (buffer-size %d)\n",
                dev->name, old_mtu, MV_RX_BUF_SIZE(old_mtu), dev->mtu, 
                MV_RX_BUF_SIZE(dev->mtu));
 
    return 0;

 error:
    printk( "%s: change mtu failed\n", dev->name );
    return -1;
}