Randy Dunlap wrote, at 12/30/2010 12:53 AM:
quoted text
> On Wed, 29 Dec 2010 13:07:00 +1100 Stephen Rothwell wrote:
> 
>> Hi all,
>>
>> Changes since 20101228:
> 
> 
> In file included from linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:22:
> linux-next-20101229/include/net/netfilter/nf_conntrack.h:94: error: field 'ct_general' has incomplete type
> linux-next-20101229/include/net/netfilter/nf_conntrack.h: In function 'nf_ct_get':
> linux-next-20101229/include/net/netfilter/nf_conntrack.h:174: error: 'const struct sk_buff' has no member named 'nfct'
> linux-next-20101229/include/net/netfilter/nf_conntrack.h: In function 'nf_ct_put':
> linux-next-20101229/include/net/netfilter/nf_conntrack.h:181: error: implicit declaration of function 'nf_conntrack_put'
>   CC      net/ipv6/exthdrs_core.o
> In file included from linux-next-20101229/include/net/netfilter/nf_conntrack_core.h:18,
>                  from linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:26:
> linux-next-20101229/include/net/netfilter/nf_conntrack_ecache.h: In function 'nf_ct_ecache_ext_add':
> linux-next-20101229/include/net/netfilter/nf_conntrack_ecache.h:35: error: 'struct net' has no member named 'ct'
> In file included from linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:26:
> linux-next-20101229/include/net/netfilter/nf_conntrack_core.h: In function 'nf_conntrack_confirm':
> linux-next-20101229/include/net/netfilter/nf_conntrack_core.h:60: error: 'struct sk_buff' has no member named 'nfct'
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c: In function 'nf_ct6_defrag_user':
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:36: error: 'struct sk_buff' has no member named 'nfct'
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:37: error: implicit declaration of function 'nf_ct_zone'
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:37: error: 'struct sk_buff' has no member named 'nfct'
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c: In function 'ipv6_defrag':
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:60: error: 'struct sk_buff' has no member named 'nfct'
> linux-next-20101229/net/ipv6/netfilter/nf_defrag_ipv6_hooks.c:60: error: 'struct sk_buff' has no member named 'nfct'
> make[4]: *** [net/ipv6/netfilter/nf_defrag_ipv6_hooks.o] Error 1
> make[3]: *** [net/ipv6/netfilter] Error 2

CONFIG_NF_DEFRAG_IPV6 depends on CONFIG_NF_CONNTRACK_IPV6 which depends on CONFIG_NF_CONNTRACK.
In you config file, CONFIG_NF_CONNTRACK_IPV6 and CONFIG_NF_CONNTRACK are not set, 
but CONFIG_NF_DEFRAG_IPV6 is set with 'y'. This is same with IPv4.

Selecting CONFIG_NF_CONNTRACK and CONFIG_NF_CONNTRACK_IPV6 may help to you.

-- 
Best Regards
-----
Shan Wei
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