netdev - Re: [PATCH 2/3] i40e: Add XDP

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Message-ID: <201612090331.1UJP1l3g%fengguang.wu@intel.com>
Date:   Fri, 9 Dec 2016 03:20:35 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Björn Töpel <bjorn.topel@...il.com>
Cc:     kbuild-all@...org, jeffrey.t.kirsher@...el.com,
        intel-wired-lan@...ts.osuosl.org,
        Björn Töpel <bjorn.topel@...el.com>,
        john.r.fastabend@...el.com, magnus.karlsson@...el.com,
        netdev@...r.kernel.org
Subject: Re: [PATCH 2/3] i40e: Add XDP_TX support

Hi Björn,

[auto build test ERROR on next-20161208]
[cannot apply to jkirsher-next-queue/dev-queue v4.9-rc8 v4.9-rc7 v4.9-rc6 v4.9-rc8]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Bj-rn-T-pel/i40e-Support-for-XDP/20161209-013138
config: sparc64-allmodconfig (attached as .config)
compiler: sparc64-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=sparc64 

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

   In file included from include/linux/cache.h:4:0,
                    from include/linux/printk.h:8,
                    from include/linux/kernel.h:13,
                    from include/linux/list.h:8,
                    from include/linux/timer.h:4,
                    from include/linux/workqueue.h:8,
                    from include/linux/bpf.h:11,
                    from drivers/net/ethernet/intel/i40e/i40e_txrx.c:27:
   drivers/net/ethernet/intel/i40e/i40e_txrx.c: In function 'i40e_try_flip_rx_page':
>> drivers/net/ethernet/intel/i40e/i40e_txrx.c:1613:32: error: 'size' undeclared (first use in this function)
     unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
                                   ^
   include/uapi/linux/kernel.h:10:41: note: in definition of macro '__ALIGN_KERNEL_MASK'
    #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
                                            ^
   include/linux/kernel.h:49:22: note: in expansion of macro '__ALIGN_KERNEL'
    #define ALIGN(x, a)  __ALIGN_KERNEL((x), (a))
                         ^~~~~~~~~~~~~~
>> drivers/net/ethernet/intel/i40e/i40e_txrx.c:1613:26: note: in expansion of macro 'ALIGN'
     unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
                             ^~~~~
   drivers/net/ethernet/intel/i40e/i40e_txrx.c:1613:32: note: each undeclared identifier is reported only once for each function it appears in
     unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
                                   ^
   include/uapi/linux/kernel.h:10:41: note: in definition of macro '__ALIGN_KERNEL_MASK'
    #define __ALIGN_KERNEL_MASK(x, mask) (((x) + (mask)) & ~(mask))
                                            ^
   include/linux/kernel.h:49:22: note: in expansion of macro '__ALIGN_KERNEL'
    #define ALIGN(x, a)  __ALIGN_KERNEL((x), (a))
                         ^~~~~~~~~~~~~~
>> drivers/net/ethernet/intel/i40e/i40e_txrx.c:1613:26: note: in expansion of macro 'ALIGN'
     unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
                             ^~~~~

vim +/size +1613 drivers/net/ethernet/intel/i40e/i40e_txrx.c

  1607	 */
  1608	static bool i40e_try_flip_rx_page(struct i40e_rx_buffer *rx_buffer)
  1609	{
  1610	#if (PAGE_SIZE < 8192)
  1611		unsigned int truesize = I40E_RXBUFFER_2048;
  1612	#else
> 1613		unsigned int truesize = ALIGN(size, L1_CACHE_BYTES);
  1614		unsigned int last_offset = PAGE_SIZE - I40E_RXBUFFER_2048;
  1615	#endif
  1616	

---
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