Subject: Re: [PATCH bpf-next v2 4/8] xsk: register XDP sockets at bind(), and add new AF_XDP BPF helper

From: kernel test robot <[email-masked]>
Date: Wed, 20 Jan 2021 16:25:43 +0800

Hi "Björn,

I love your patch! Yet something to improve:

[auto build test ERROR on 95204c9bfa48d2f4d3bab7df55c1cc823957ff81]

url:    https://github.com/0day-ci/linux/commits/Bj-rn-T-pel/Introduce-bpf_redirect_xsk-helper/20210120-150357
base:    95204c9bfa48d2f4d3bab7df55c1cc823957ff81
config: x86_64-randconfig-m031-20210120 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
        # https://github.com/0day-ci/linux/commit/419b1341d7980ee57fb10f4306719eef3c1a15f8
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Bj-rn-T-pel/Introduce-bpf_redirect_xsk-helper/20210120-150357
        git checkout 419b1341d7980ee57fb10f4306719eef3c1a15f8
        # save the attached .config to linux build tree
        make W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <[email-masked]>

All errors (new ones prefixed by >>):

   In file included from <command-line>:
   net/core/filter.c: In function '____bpf_xdp_redirect_xsk':
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert'
     300 |   if (!(condition))     \
         |         ^~~~~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |  ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |  ^~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |                     ^~~~~~~~~~~~~
   include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
      49 |  compiletime_assert_rwonce_type(x);    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert'
     300 |   if (!(condition))     \
         |         ^~~~~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |  ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |  ^~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |                     ^~~~~~~~~~~~~
   include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
      49 |  compiletime_assert_rwonce_type(x);    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert'
     300 |   if (!(condition))     \
         |         ^~~~~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |  ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |  ^~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |                     ^~~~~~~~~~~~~
   include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
      49 |  compiletime_assert_rwonce_type(x);    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert'
     300 |   if (!(condition))     \
         |         ^~~~~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |  ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |  ^~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:21: note: in expansion of macro '__native_word'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |                     ^~~~~~~~~~~~~
   include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
      49 |  compiletime_assert_rwonce_type(x);    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/linux/compiler_types.h:300:9: note: in definition of macro '__compiletime_assert'
     300 |   if (!(condition))     \
         |         ^~~~~~~~~
   include/linux/compiler_types.h:320:2: note: in expansion of macro '_compiletime_assert'
     320 |  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
         |  ^~~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:36:2: note: in expansion of macro 'compiletime_assert'
      36 |  compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
         |  ^~~~~~~~~~~~~~~~~~
   include/asm-generic/rwonce.h:49:2: note: in expansion of macro 'compiletime_assert_rwonce_type'
      49 |  compiletime_assert_rwonce_type(x);    \
         |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/linux/compiler_types.h:271:13: note: in definition of macro '__unqual_scalar_typeof'
     271 |   _Generic((x),      \
         |             ^
   include/asm-generic/rwonce.h:50:2: note: in expansion of macro '__READ_ONCE'
      50 |  __READ_ONCE(x);       \
         |  ^~~~~~~~~~~
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~
   In file included from ./arch/x86/include/generated/asm/rwonce.h:1,
                    from include/linux/compiler.h:246,
                    from include/linux/export.h:43,
                    from include/linux/linkage.h:7,
                    from include/linux/kernel.h:7,
                    from include/linux/list.h:9,
                    from include/linux/module.h:12,
                    from net/core/filter.c:20:
>> net/core/filter.c:4165:35: error: 'struct netdev_rx_queue' has no member named 'xsk'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |                                   ^
   include/asm-generic/rwonce.h:44:72: note: in definition of macro '__READ_ONCE'
      44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
         |                                                                        ^
   net/core/filter.c:4165:7: note: in expansion of macro 'READ_ONCE'
    4165 |  xs = READ_ONCE(dev->_rx[queue_id].xsk);
         |       ^~~~~~~~~

vim +4165 net/core/filter.c

  4157	
  4158	BPF_CALL_2(bpf_xdp_redirect_xsk, struct xdp_buff *, xdp, u64, action)
  4159	{
  4160		struct net_device *dev = xdp->rxq->dev;
  4161		u32 queue_id = xdp->rxq->queue_index;
  4162		struct bpf_redirect_info *ri;
  4163		struct xdp_sock *xs;
  4164	
> 4165		xs = READ_ONCE(dev->_rx[queue_id].xsk);
  4166		if (!xs)
  4167			return action;
  4168	
  4169		ri = this_cpu_ptr(&bpf_redirect_info);
  4170		ri->tgt_type = XDP_REDIR_XSK;
  4171		ri->tgt_value = xs;
  4172	
  4173		return XDP_REDIRECT;
  4174	}
  4175	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/[email-masked]