Re: dev_get_by_name example

From: Richard Weinberger
Date: Sun Mar 08 2015 - 10:07:16 EST

On Sun, Mar 8, 2015 at 2:04 PM, Ran Shalit <ranshalit@xxxxxxxxx> wrote:
> Hello,
> How should we use dev_get_by_name ?
> What should be the 1st parameter should it be a pointer ? (without
> allocation required) ?

The network namespace you want to use.

> struct net_device *dev_get_by_name(struct net *net, const char *name);
> I get an exception when using it for unallocated pointer in 1st
> argument, but succeeded with the following:
> ndev = dev_get_by_name(&init_net, "eth0");
> Is it alloweed to use init_net ?

Only if you want to do a lookup in the initial network namespace.
If you're in process context you better use the current network namespace.
But I don't know your use case.

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