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multiple net_device

Posted by nick_kdd 
multiple net_device
February 20, 2016 04:55PM
Dear all,

lets say a linux based computer(debian) with ethernet,wifi, usb modem connected to the, linux kernel version is 3.3

Question:
for each network device the network driver builds its own net_device struct and register itself with the network interface layer of the kernel.

struct net_device net_dev[3] = {
{init: ethernet_init,},
{init: wifi_init,},
{init: usbnet_init,},
};

register_netdev(net_dev[0]);
register_netdev(net_dev[1]);
register_netdev(net_dev[2]);

so in total there are 3 network devices as seen by the kernel
now how does the kernel decide to which network interface. to use while forwarding IP packet.

can some one please specify any link or document which answers the above question ?

Regards
Re: multiple net_device
June 24, 2016 02:33AM
netdev->pdev->netdev = NULL;
netdev->pdev_pseudo = netdev->pdev;
netdev->pdev = NULL;
netdev->features |= NETIF_F_PSEUDO_REG;

This will make every "port" a psuedo device...which is ESyi's way of supporting a multi-port device.Buy Custom Essays
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