[openeuler:openEuler-1.0-LTS 1941/1941] net/netfilter/nf_nat_proto.c:56:6: warning: no previous prototype for 'nf_nat_csum_recalc'

13 Dec 2025

      tree:   https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head:   df8d11fbcbb07177c2500e63d7f5a36063977596
commit: 83abe3a3b85762720192809ac8695ff9255cfd23 [1941/1941] netfilter: nat: remove csum_recalc hook
config: arm64-defconfig (https://download.01.org/0day-ci/archive/20251213/202512131018.8qdFT5tV-lkp@i...)
compiler: aarch64-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251213/202512131018.8qdFT5tV-lkp@i...)

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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512131018.8qdFT5tV-lkp@intel.com/

All warnings (new ones prefixed by >>):
...
...
net/netfilter/nf_nat_proto.c:56:6: warning: no previous prototype for 'nf_nat_csum_recalc' [-Wmissing-prototypes]
      56 | void nf_nat_csum_recalc(struct sk_buff *skb,
         |      ^~~~~~~~~~~~~~~~~~
vim +/nf_nat_csum_recalc +56 net/netfilter/nf_nat_proto.c

    55
...
56	void nf_nat_csum_recalc(struct sk_buff *skb,
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