Re: [PATCH v3 bpf-next 11/11] selftest: bpf: Test bpf_sk_assign_tcp_reqsk().

Hi Kuniyuki,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Kuniyuki-Iwashima/tcp-Clean-up-reverse-xmas-tree-in-cookie_v-46-_check/20231122-030405
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/20231121190134.73447-1-kuniyu%40amazon.com
patch subject: [PATCH v3 bpf-next 11/11] selftest: bpf: Test bpf_sk_assign_tcp_reqsk().
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231122/202311222353.3MM8wxm0-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot [off-list ref]
| Closes: https://lore.kernel.org/r/202311222353.3MM8wxm0-lkp@intel.com/ (local)

All errors (new ones prefixed by >>):

quoted

progs/test_tcp_custom_syncookie.c:63:31: error: field has incomplete type 'struct tcp_cookie_attributes'

      63 |         struct tcp_cookie_attributes attr;
         |                                      ^
   tools/testing/selftests/bpf/bpf_kfuncs.h:60:8: note: forward declaration of 'struct tcp_cookie_attributes'
      60 | struct tcp_cookie_attributes;
         |        ^

quoted

progs/test_tcp_custom_syncookie.c:514:57: error: use of undeclared identifier 'BPF_F_CURRENT_NETNS'; did you mean 'BPF_F_CURRENT_CPU'?

     514 |         skc = bpf_skc_lookup_tcp(ctx->skb, &tuple, tuple_size, BPF_F_CURRENT_NETNS, 0);
         |                                                                ^~~~~~~~~~~~~~~~~~~
         |                                                                BPF_F_CURRENT_CPU
   /tools/include/vmlinux.h:104429:2: note: 'BPF_F_CURRENT_CPU' declared here
    104429 |         BPF_F_CURRENT_CPU = 4294967295ULL,
           |         ^
   2 errors generated.

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