Subject: Re: [PATCH bpf-next] bpf: Set skb redirect and from_ingress info in __bpf_tx_skb

From: kernel test robot <[email-masked]>
Date: Sat, 15 Apr 2023 08:43:06 +0800

Hi Daniel,

kernel test robot noticed the following build errors:

[auto build test ERROR on bpf-next/master]

url:    https://github.com/intel-lab-lkp/linux/commits/Daniel-Borkmann/bpf-Set-skb-redirect-and-from_ingress-info-in-__bpf_tx_skb/20230415-065912
base:   https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
patch link:    https://lore.kernel.org/r/c68bf723-3406-d177-49b4-6d5b485048de%40iogearbox.net
patch subject: [PATCH bpf-next] bpf: Set skb redirect and from_ingress info in __bpf_tx_skb
config: x86_64-randconfig-a002-20230410 (https://download.01.org/0day-ci/archive/20230415/[email-masked]/config)
compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/intel-lab-lkp/linux/commit/91c0d1d0b071c23d95bf9747b89daf5ae378ad1a
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Daniel-Borkmann/bpf-Set-skb-redirect-and-from_ingress-info-in-__bpf_tx_skb/20230415-065912
        git checkout 91c0d1d0b071c23d95bf9747b89daf5ae378ad1a
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash net/core/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email-masked]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email-masked]/

All errors (new ones prefixed by >>):

>> net/core/filter.c:2125:39: error: no member named 'tc_at_ingress' in 'struct sk_buff'
           skb_set_redirected_noclear(skb, skb->tc_at_ingress);
                                           ~~~  ^
   1 error generated.

vim +2125 net/core/filter.c

  2113	
  2114	static inline int __bpf_tx_skb(struct net_device *dev, struct sk_buff *skb)
  2115	{
  2116		int ret;
  2117	
  2118		if (dev_xmit_recursion()) {
  2119			net_crit_ratelimited("bpf: recursion limit reached on datapath, buggy bpf program?\n");
  2120			kfree_skb(skb);
  2121			return -ENETDOWN;
  2122		}
  2123	
  2124		skb->dev = dev;
> 2125		skb_set_redirected_noclear(skb, skb->tc_at_ingress);
  2126		skb_clear_tstamp(skb);
  2127	
  2128		dev_xmit_recursion_inc();
  2129		ret = dev_queue_xmit(skb);
  2130		dev_xmit_recursion_dec();
  2131	
  2132		return ret;
  2133	}
  2134	

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