Re: [PATCHv2 net-next 2/3] bonding: Add ESN support to IPSec HW offload

[Hangbin Liu <liuhangbin@gmail.com>]

On Tue, Aug 20, 2024 at 05:17:52AM +0800, kernel test robot wrote:
> Hi Hangbin,
> 
> kernel test robot noticed the following build errors:
> 
> [auto build test ERROR on net-next/main]
> 
> url:    https://github.com/intel-lab-lkp/linux/commits/Hangbin-Liu/bonding-add-common-function-to-check-ipsec-device/20240819-195504
> base:   net-next/main
> patch link:    https://lore.kernel.org/r/20240819075334.236334-3-liuhangbin%40gmail.com
> patch subject: [PATCHv2 net-next 2/3] bonding: Add ESN support to IPSec HW offload
> config: x86_64-buildonly-randconfig-001-20240820 (https://download.01.org/0day-ci/archive/20240820/202408200431.wjjkEZ2m-lkp@intel.com/config)
> compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240820/202408200431.wjjkEZ2m-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/202408200431.wjjkEZ2m-lkp@intel.com/
> 
> All errors (new ones prefixed by >>):
> 
>    drivers/net/bonding/bond_main.c:434:10: error: returning 'void *' from a function with incompatible result type 'struct net_device'
>      434 |                 return NULL;
>          |                        ^~~~
>    include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
>        8 | #define NULL ((void *)0)
>          |              ^~~~~~~~~~~
>    drivers/net/bonding/bond_main.c:442:10: error: returning 'void *' from a function with incompatible result type 'struct net_device'
>      442 |                 return NULL;
>          |                        ^~~~
>    include/linux/stddef.h:8:14: note: expanded from macro 'NULL'
>        8 | #define NULL ((void *)0)
>          |              ^~~~~~~~~~~
>    drivers/net/bonding/bond_main.c:446:9: error: returning 'struct net_device *' from a function with incompatible result type 'struct net_device'; dereference with *
>      446 |         return real_dev;
>          |                ^~~~~~~~
>          |                *
>    drivers/net/bonding/bond_main.c:630:11: error: assigning to 'struct net_device *' from incompatible type 'struct net_device'
>      630 |         real_dev = bond_ipsec_dev(xs);
>          |                  ^ ~~~~~~~~~~~~~~~~~~
>    drivers/net/bonding/bond_main.c:658:11: error: assigning to 'struct net_device *' from incompatible type 'struct net_device'
>      658 |         real_dev = bond_ipsec_dev(xs);
>          |                  ^ ~~~~~~~~~~~~~~~~~~
> >> drivers/net/bonding/bond_main.c:668:2: error: use of undeclared identifier 'rhel_dev'; did you mean 'real_dev'?

Hmm, weird... I tried to build the patch via `vng` before post, with
CONFIG_XFRM_OFFLOAD=y in tools/testing/selftests/drivers/net/bonding/config.
But looks it's not build in. Next time I need to double check..

Thanks
Hangbin