netdev - Re: [GIT PULL] [IPV6] COMPAT: Fix SSM applications on 64bit kernels.

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Date:	Thu, 24 Apr 2008 17:16:44 +0900 (JST)
From:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
To:	davem@...emloft.net
Cc:	dlstevens@...ibm.com, netdev@...r.kernel.org
Subject: Re: [GIT PULL] [IPV6] COMPAT: Fix SSM applications on 64bit
 kernels.

In article <20080424.010845.257071066.davem@...emloft.net> (at Thu, 24 Apr 2008 01:08:45 -0700 (PDT)), David Miller <davem@...emloft.net> says:

> From: YOSHIFUJI Hideaki / 吉藤英明 <yoshfuji@...ux-ipv6.org>
> Date: Thu, 24 Apr 2008 17:02:57 +0900 (JST)
> 
> > +#ifdef __KERNEL__
> > +struct __compat_sockaddr_storage {
> > +	unsigned short  ss_family;
> > +	char		__data[_K_SS_MAXSIZE - sizeof(unsigned short)];
> > +} __attribute__ ((aligned(4)));
> > +#endif
> 
> Should include <linux/compat.h>, use compat types, and be guarded
> by CONFIG_COMPAT.  This goes for all such structures.

Do you mean, something like this?

#ifdef __KERNEL__
#include <linux/compat.h>

#ifdef CONFIG_COMPAT
struct __compat_sockaddr_storage {
   unsigned short  ss_family;
  char            __data[_K_SS_MAXSIZE - sizeof(unsigned short)];
 __attribute__ ((aligned(alignof(compat_uptr_t))));
#endif
#endif

> Where is ip6_mc_compat_msfget() header file declaration?
> 
> This following call casts the 5th argument to "struct group_filter"
> but the argument type in the implementation is...

I'll fix...

> Thanks for doing this work, please make corrections and I also
> look forward to your ipv4 side fixes.

Will do.

--yoshfuji
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