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Date:   Sat, 23 Sep 2023 00:05:22 +0800
From:   kernel test robot <lkp@intel.com>
To:     Stanislav Fomichev <sdf@google.com>
Cc:     oe-kbuild-all@lists.linux.dev, linux-kernel@vger.kernel.org,
        Martin KaFai Lau <martin.lau@kernel.org>
Subject: net/core/xdp.c:725:5: error: no previous declaration for
 'bpf_xdp_metadata_rx_timestamp'
Message-ID: <202309230010.Eio2q6e0-lkp@intel.com>
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Hi Stanislav,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   27bbf45eae9ca98877a2d52a92a188147cd61b07
commit: 3d76a4d3d4e591af3e789698affaad88a5a8e8ab bpf: XDP metadata RX kfuncs
date:   8 months ago
config: x86_64-sof-customedconfig-avs-defconfig (https://download.01.org/0day-ci/archive/20230923/202309230010.Eio2q6e0-lkp@intel.com/config)
compiler: gcc-7 (Ubuntu 7.5.0-6ubuntu2) 7.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230923/202309230010.Eio2q6e0-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/202309230010.Eio2q6e0-lkp@intel.com/

All errors (new ones prefixed by >>):

>> net/core/xdp.c:725:5: error: no previous declaration for 'bpf_xdp_metadata_rx_timestamp' [-Werror=missing-declarations]
    int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp)
        ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> net/core/xdp.c:737:5: error: no previous declaration for 'bpf_xdp_metadata_rx_hash' [-Werror=missing-declarations]
    int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, u32 *hash)
        ^~~~~~~~~~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/bpf_xdp_metadata_rx_timestamp +725 net/core/xdp.c

   713	
   714	__diag_push();
   715	__diag_ignore_all("-Wmissing-prototypes",
   716			  "Global functions as their definitions will be in vmlinux BTF");
   717	
   718	/**
   719	 * bpf_xdp_metadata_rx_timestamp - Read XDP frame RX timestamp.
   720	 * @ctx: XDP context pointer.
   721	 * @timestamp: Return value pointer.
   722	 *
   723	 * Returns 0 on success or ``-errno`` on error.
   724	 */
 > 725	int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp)
   726	{
   727		return -EOPNOTSUPP;
   728	}
   729	
   730	/**
   731	 * bpf_xdp_metadata_rx_hash - Read XDP frame RX hash.
   732	 * @ctx: XDP context pointer.
   733	 * @hash: Return value pointer.
   734	 *
   735	 * Returns 0 on success or ``-errno`` on error.
   736	 */
 > 737	int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, u32 *hash)
   738	{
   739		return -EOPNOTSUPP;
   740	}
   741	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki