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What's wrong with linux/if.h and net/if.h?

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  What's wrong with linux/if.h and net/if.h? fish <wenkai1987@gmail.com> - 2012-01-06 00:11 -0800
    Re: What's wrong with linux/if.h and net/if.h? Jorgen Grahn <grahn+nntp@snipabacken.se> - 2012-01-06 08:53 +0000
    Re: What's wrong with linux/if.h and net/if.h? Ian Collins <ian-news@hotmail.com> - 2012-01-06 21:54 +1300
    Re: What's wrong with linux/if.h and net/if.h? Goran <goran.pusic@gmail.com> - 2012-01-06 01:49 -0800

#13146 — What's wrong with linux/if.h and net/if.h?

In my project, I include pfring.h, but compile error: some functions
in net/if.h and linux/if.h are redefinition. I found that the pfring.h
include linux/if.h So, I test a program, my test code:

#include <linux/if.h>
#include <net/if.h>

int main(void) {
    return 0;
}
It expected compile error. So, what's wrong with linux/if.h and net/
if.h ? Can not I include them at once?

error message:
===========================
In file included from test.c:1:0:
/usr/include/linux/if.h:178:19: error: field 'ifru_addr' has
incomplete type
/usr/include/linux/if.h:179:19: error: field 'ifru_dstaddr' has
incomplete type
/usr/include/linux/if.h:180:19: error: field 'ifru_broadaddr' has
incomplete type
/usr/include/linux/if.h:181:19: error: field 'ifru_netmask' has
incomplete type
/usr/include/linux/if.h:182:20: error: field 'ifru_hwaddr' has
incomplete type
In file included from test.c:2:0:
/usr/include/net/if.h:45:5: error: expected identifier before numeric
constant
/usr/include/net/if.h:112:8: error: redefinition of 'struct ifmap'
/usr/include/linux/if.h:136:8: note: originally defined here
/usr/include/net/if.h:127:8: error: redefinition of 'struct ifreq'
/usr/include/linux/if.h:170:8: note: originally defined here
/usr/include/net/if.h:177:8: error: redefinition of 'struct ifconf'
/usr/include/linux/if.h:219:8: note: originally defined here

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#13147

On Fri, 2012-01-06, fish wrote:
> In my project, I include pfring.h, but compile error: some functions
> in net/if.h and linux/if.h are redefinition. I found that the pfring.h
> include linux/if.h So, I test a program, my test code:
...

Wrong group; try comp.os.linux.networking or
comp.os.linux.development.system.

/Jorgen

-- 
  // Jorgen Grahn <grahn@  Oo  o.   .     .
\X/     snipabacken.se>   O  o   .

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#13148

On 01/ 6/12 09:11 PM, fish wrote:
> In my project, I include pfring.h, but compile error: some functions
> in net/if.h and linux/if.h are redefinition. I found that the pfring.h
> include linux/if.h So, I test a program, my test code:
>
> #include<linux/if.h>
> #include<net/if.h>

You really should ask this on a Linux programming group.

-- 
Ian Collins

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#13152

On Jan 6, 9:11 am, fish <wenkai1...@gmail.com> wrote:
> In my project, I include pfring.h, but compile error: some functions
> in net/if.h and linux/if.h are redefinition. I found that the pfring.h
> include linux/if.h So, I test a program, my test code:
>
> #include <linux/if.h>
> #include <net/if.h>
>
> int main(void) {
>     return 0;}
>
> It expected compile error. So, what's wrong with linux/if.h and net/
> if.h ? Can not I include them at once?
>
> error message:
> ===========================
> In file included from test.c:1:0:
> /usr/include/linux/if.h:178:19: error: field 'ifru_addr' has
> incomplete type

Off the top of my head.. ifru_addr is sockaddr, so try including sys/
socket.h (sockaddr should be defined there) before linux/if.h

If that's your problem, then I'd say that linux/if.h is broken. You
should be able to include it anywhere and expect stuff to work.

Goran.

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