[hare-nvme:configfs-ns 1/9] drivers/nvme/target/../target/bpf.h:26:9: error: call to undeclared function 'nvmet_bpf_req_complete'; ISO C99 and later do not support implicit function declarations

[kernel test robot <lkp@intel.com>]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/hare/nvme.git configfs-ns
head:   509cbb083b05db0f02a3ceea68bb093f8725a6a5
commit: 94040dcdf8d7b146f62dfb3e0156d93a9713880d [1/9] nvmet-bpf: eBPF struct_ops support for log pages
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20260508/202605082159.6BFSLR4U-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
rustc: rustc 1.88.0 (6b00bc388 2025-06-23)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260508/202605082159.6BFSLR4U-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605082159.6BFSLR4U-lkp@intel.com/

All error/warnings (new ones prefixed by >>):

   In file included from drivers/nvme/target/fcloop.c:11:
   In file included from drivers/nvme/target/../target/nvmet.h:26:
>> drivers/nvme/target/../target/bpf.h:15:44: warning: declaration of 'struct nvmet_subsys_link' will not be visible outside of this function [-Wvisibility]
      15 | static inline void nvmet_bpf_detach(struct nvmet_subsys_link *s) {}
         |                                            ^
>> drivers/nvme/target/../target/bpf.h:16:47: warning: declaration of 'struct nvmet_subsys' will not be visible outside of this function [-Wvisibility]
      16 | static inline bool nvmet_bpf_supported(struct nvmet_subsys *subsys, struct nvmet_port *port)
         |                                               ^
>> drivers/nvme/target/../target/bpf.h:16:76: warning: declaration of 'struct nvmet_port' will not be visible outside of this function [-Wvisibility]
      16 | static inline bool nvmet_bpf_supported(struct nvmet_subsys *subsys, struct nvmet_port *port)
         |                                                                            ^
>> drivers/nvme/target/../target/bpf.h:20:56: warning: declaration of 'struct nvmet_req' will not be visible outside of this function [-Wvisibility]
      20 | static inline bool nvmet_bpf_log_page_supported(struct nvmet_req *req, u8 lid)
         |                                                        ^
   drivers/nvme/target/../target/bpf.h:24:50: warning: declaration of 'struct nvmet_subsys' will not be visible outside of this function [-Wvisibility]
      24 | static inline void nvmet_bpf_get_log_page(struct nvmet_subsys *subsys, struct nvmet_req *req)
         |                                                  ^
   drivers/nvme/target/../target/bpf.h:24:79: warning: declaration of 'struct nvmet_req' will not be visible outside of this function [-Wvisibility]
      24 | static inline void nvmet_bpf_get_log_page(struct nvmet_subsys *subsys, struct nvmet_req *req)
         |                                                                               ^
>> drivers/nvme/target/../target/bpf.h:26:9: error: call to undeclared function 'nvmet_bpf_req_complete'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
      26 |         return nvmet_bpf_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR);
         |                ^
>> drivers/nvme/target/../target/bpf.h:26:61: error: use of undeclared identifier 'NVME_SC_DNR'
      26 |         return nvmet_bpf_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR);
         |                                                                    ^
   6 warnings and 2 errors generated.


vim +/nvmet_bpf_req_complete +26 drivers/nvme/target/../target/bpf.h

     8	
     9	void nvmet_bpf_detach(struct nvmet_subsys_link *s);
    10	bool nvmet_bpf_supported(struct nvmet_subsys *subsys, struct nvmet_port *port);
    11	bool nvmet_bpf_log_page_supported(struct nvmet_req *req, u8 lid);
    12	void nvmet_bpf_get_log_page(struct nvmet_subsys *subsys, struct nvmet_req *req);
    13	int __init nvmet_bpf_struct_ops_init(void);
    14	#else
  > 15	static inline void nvmet_bpf_detach(struct nvmet_subsys_link *s) {}
  > 16	static inline bool nvmet_bpf_supported(struct nvmet_subsys *subsys, struct nvmet_port *port)
    17	{
    18		return false;
    19	}
  > 20	static inline bool nvmet_bpf_log_page_supported(struct nvmet_req *req, u8 lid)
    21	{
    22		return false;
    23	}
    24	static inline void nvmet_bpf_get_log_page(struct nvmet_subsys *subsys, struct nvmet_req *req)
    25	{
  > 26		return nvmet_bpf_req_complete(req, NVME_SC_INVALID_FIELD | NVME_SC_DNR);

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