From: David Miller <davem@davemloft.net>
Date: Sat, 21 Aug 2010 23:01:29 -0700 (PDT)

quoted text
> From: Changli Gao <xiaosuo@gmail.com>
> Date: Sat, 21 Aug 2010 20:42:09 +0800
> 
>> I think the following lines from your patch are also useful, and you'd
>> better move them above the "---" marker.
> 
> I'll take care of this when applying his patch.
> 
> Also this patch was against net-2.6 or even something
> earlier, so there were many patch rejects I had to fix
> up against include/linux/if_pppox.h when applying this
> to net-next-2.6

It also doesn't even build against anything even remotely
recent:

drivers/net/pptp.c: In function ‘pptp_xmit’:
drivers/net/pptp.c:204: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c:271: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c:279: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c:283: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c:288: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c: In function ‘pptp_connect’:
drivers/net/pptp.c:483: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c:485: error: ‘struct rtable’ has no member named ‘u’
drivers/net/pptp.c: In function ‘pptp_init_module’:
drivers/net/pptp.c:675: error: implicit declaration of function ‘__vmalloc’
drivers/net/pptp.c:676: warning: assignment makes pointer from integer without a cast
drivers/net/pptp.c:707: error: implicit declaration of function ‘vfree’

That means this patch is against a tree which is at least two
releases old.  We got rid of the 'u' member of struct rtable
quite some time ago.

Ugh, I'll fix this up, but after _8_, yes _EIGHT_, iterations of this
patch set the amount of problems that remain is completely
unbelievable.