> On Sun, 07 Dec 2025 17:06:40 +0100 Lorenzo Bianconi wrote:
> > Introduce SW acceleration for IP6IP6 tunnels in the netfilter flowtable
> > infrastructure.
>
> tc-testing build fails with this:
>
> net/netfilter/nf_flow_table_ip.c: In function ‘nf_flow_ip6_tunnel_proto’:
> net/netfilter/nf_flow_table_ip.c:370:42: error: ‘inet6_protos’ undeclared
> (first use in this function); did you mean ‘inet_protos’?
> 370 | ipprot = rcu_dereference(inet6_protos[nexthdr]);
> | ^~~~~~~~~~~~
> ./include/linux/rcupdate.h:532:17: note: in definition of macro
> ‘__rcu_dereference_check’
> 532 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
> | ^
> ./include/linux/rcupdate.h:770:28: note: in expansion of macro
> ‘rcu_dereference_check’
> 770 | #define rcu_dereference(p) rcu_dereference_check(p, 0)
> | ^~~~~~~~~~~~~~~~~~~~~
> net/netfilter/nf_flow_table_ip.c:370:26: note: in expansion of macro
> ‘rcu_dereference’
> 370 | ipprot = rcu_dereference(inet6_protos[nexthdr]);
> | ^~~~~~~~~~~~~~~
> net/netfilter/nf_flow_table_ip.c:370:42: note: each undeclared identifier is
> reported only once for each function it appears in
> 370 | ipprot = rcu_dereference(inet6_protos[nexthdr]);
> | ^~~~~~~~~~~~
> ./include/linux/rcupdate.h:532:17: note: in definition of macro
> ‘__rcu_dereference_check’
> 532 | typeof(*p) *local = (typeof(*p) *__force)READ_ONCE(p); \
> | ^
> ./include/linux/rcupdate.h:770:28: note: in expansion of macro
> ‘rcu_dereference_check’
> 770 | #define rcu_dereference(p) rcu_dereference_check(p, 0)
> | ^~~~~~~~~~~~~~~~~~~~~
> net/netfilter/nf_flow_table_ip.c:370:26: note: in expansion of macro
> ‘rcu_dereference’
> 370 | ipprot = rcu_dereference(inet6_protos[nexthdr]);
> | ^~~~~~~~~~~~~~~
> net/netfilter/nf_flow_table_ip.c:374:27: error: invalid use of undefined type
> ‘const struct inet6_protocol’
> 374 | if (ipprot->flags & INET6_PROTO_FINAL) {
> | ^~
> net/netfilter/nf_flow_table_ip.c:374:37: error: ‘INET6_PROTO_FINAL’
> undeclared (first use in this function)
> 374 | if (ipprot->flags & INET6_PROTO_FINAL) {
> | ^~~~~~~~~~~~~~~~~
> net/netfilter/nf_flow_table_ip.c:383:29: error: invalid use of undefined type
> ‘const struct inet6_protocol’
> 383 | ret = ipprot->handler(skb);
> | ^~Hi Jakub, I guess CONFIG_IPV6 is not enabled, right? I will fix it. Regards, Lorenzo
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