2010/11/1 Bond <jamesbond.2k.g@xxxxxxxxx>
>
> I have used typedef in my C programs previously many times.
> So it is not new to me
>
> For example consider following typedef
> struct var {
> int data1;
> int data2;
> char data3;
> };
>
> typedef struct var newtype;
> then we can use newtype instead of struct var.
>
> Now see this
> typedef int (*iw_handler)(struct net_device *dev, struct iw_request_info *info,
> union iwreq_data *wrqu, char *extra);
>
> above is line number 314 in include/net/iw_handler.h
>
> I was not able to understand what is being typedef'd here?
A type of 'function pointer' with four args and a int return value is declared.
With the code you cited, you can use the following code to declare a
function pointer:
iw_handler my_fun_ptr;
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