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Date:   Mon, 11 Oct 2021 02:26:25 +0800
From:   kernel test robot <lkp@...el.com>
To:     Pablo Neira Ayuso <pablo@...filter.org>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Lukas Wunner <lukas@...ner.de>
Subject: [l1k:nft_egress_v6 5/6] net/netfilter/nft_fwd_netdev.c:32:9: error:
 'skb' undeclared

tree:   https://github.com/l1k/linux nft_egress_v6
head:   bacabad3aa520ee674afbdc348b2010e583ab20c
commit: fcf97a4df9fc1f01e3030ab439787f54af1a1088 [5/6] netfilter: nft_fwd_netdev: Support egress hook
config: nios2-allyesconfig (attached as .config)
compiler: nios2-linux-gcc (GCC) 11.2.0
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/l1k/linux/commit/fcf97a4df9fc1f01e3030ab439787f54af1a1088
        git remote add l1k https://github.com/l1k/linux
        git fetch --no-tags l1k nft_egress_v6
        git checkout fcf97a4df9fc1f01e3030ab439787f54af1a1088
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=nios2 SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>

All errors (new ones prefixed by >>):

   net/netfilter/nft_fwd_netdev.c: In function 'nft_fwd_netdev_eval':
>> net/netfilter/nft_fwd_netdev.c:32:9: error: 'skb' undeclared (first use in this function)
      32 |         skb->skb_iif = skb->dev->ifindex;
         |         ^~~
   net/netfilter/nft_fwd_netdev.c:32:9: note: each undeclared identifier is reported only once for each function it appears in


vim +/skb +32 net/netfilter/nft_fwd_netdev.c

    23	
    24	static void nft_fwd_netdev_eval(const struct nft_expr *expr,
    25					struct nft_regs *regs,
    26					const struct nft_pktinfo *pkt)
    27	{
    28		struct nft_fwd_netdev *priv = nft_expr_priv(expr);
    29		int oif = regs->data[priv->sreg_dev];
    30	
    31		/* This is used by ifb only. */
  > 32		skb->skb_iif = skb->dev->ifindex;
    33		skb_set_redirected(pkt->skb, nft_hook(pkt) == NF_NETDEV_INGRESS);
    34	
    35		nf_fwd_netdev_egress(pkt, oif);
    36		regs->verdict.code = NF_STOLEN;
    37	}
    38	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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