[mac80211-next:netlink-validate-build-test-2 3/7] net/sched/act_tunnel_key.c:128:8: error: implicit declaration of function 'nla_validate'; did you mean 'key_validate'?

[kbuild test robot <lkp@intel.com>]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next.git netlink-validate-build-test-2
head:   eefd811df5bc7a7ad129ce4ac3ff473802736ad9
commit: 1217489aab75c491228eeb01ebbceabd29e989cc [3/7] netlink: make validation more configurable for future strictness
config: ia64-allmodconfig (attached as .config)
compiler: ia64-linux-gcc (GCC) 8.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 1217489aab75c491228eeb01ebbceabd29e989cc
        # save the attached .config to linux build tree
        GCC_VERSION=8.1.0 make.cross ARCH=ia64 

All errors (new ones prefixed by >>):

   net/sched/act_tunnel_key.c: In function 'tunnel_key_copy_opts':
>> net/sched/act_tunnel_key.c:128:8: error: implicit declaration of function 'nla_validate'; did you mean 'key_validate'? [-Werror=implicit-function-declaration]
     err = nla_validate(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
           ^~~~~~~~~~~~
           key_validate
   cc1: some warnings being treated as errors

vim +128 net/sched/act_tunnel_key.c

0ed5269f Simon Horman 2018-06-26  121  
0ed5269f Simon Horman 2018-06-26  122  static int tunnel_key_copy_opts(const struct nlattr *nla, u8 *dst,
0ed5269f Simon Horman 2018-06-26  123  				int dst_len, struct netlink_ext_ack *extack)
0ed5269f Simon Horman 2018-06-26  124  {
0ed5269f Simon Horman 2018-06-26  125  	int err, rem, opt_len, len = nla_len(nla), opts_len = 0;
0ed5269f Simon Horman 2018-06-26  126  	const struct nlattr *attr, *head = nla_data(nla);
0ed5269f Simon Horman 2018-06-26  127  
0ed5269f Simon Horman 2018-06-26 @128  	err = nla_validate(head, len, TCA_TUNNEL_KEY_ENC_OPTS_MAX,
0ed5269f Simon Horman 2018-06-26  129  			   enc_opts_policy, extack);
0ed5269f Simon Horman 2018-06-26  130  	if (err)
0ed5269f Simon Horman 2018-06-26  131  		return err;
0ed5269f Simon Horman 2018-06-26  132  
0ed5269f Simon Horman 2018-06-26  133  	nla_for_each_attr(attr, head, len, rem) {
0ed5269f Simon Horman 2018-06-26  134  		switch (nla_type(attr)) {
0ed5269f Simon Horman 2018-06-26  135  		case TCA_TUNNEL_KEY_ENC_OPTS_GENEVE:
0ed5269f Simon Horman 2018-06-26  136  			opt_len = tunnel_key_copy_geneve_opt(attr, dst,
0ed5269f Simon Horman 2018-06-26  137  							     dst_len, extack);
0ed5269f Simon Horman 2018-06-26  138  			if (opt_len < 0)
0ed5269f Simon Horman 2018-06-26  139  				return opt_len;
0ed5269f Simon Horman 2018-06-26  140  			opts_len += opt_len;
0ed5269f Simon Horman 2018-06-26  141  			if (dst) {
0ed5269f Simon Horman 2018-06-26  142  				dst_len -= opt_len;
0ed5269f Simon Horman 2018-06-26  143  				dst += opt_len;
0ed5269f Simon Horman 2018-06-26  144  			}
0ed5269f Simon Horman 2018-06-26  145  			break;
0ed5269f Simon Horman 2018-06-26  146  		}
0ed5269f Simon Horman 2018-06-26  147  	}
0ed5269f Simon Horman 2018-06-26  148  
0ed5269f Simon Horman 2018-06-26  149  	if (!opts_len) {
0ed5269f Simon Horman 2018-06-26  150  		NL_SET_ERR_MSG(extack, "Empty list of tunnel options");
0ed5269f Simon Horman 2018-06-26  151  		return -EINVAL;
0ed5269f Simon Horman 2018-06-26  152  	}
0ed5269f Simon Horman 2018-06-26  153  
0ed5269f Simon Horman 2018-06-26  154  	if (rem > 0) {
0ed5269f Simon Horman 2018-06-26  155  		NL_SET_ERR_MSG(extack, "Trailing data after parsing tunnel key options attributes");
0ed5269f Simon Horman 2018-06-26  156  		return -EINVAL;
0ed5269f Simon Horman 2018-06-26  157  	}
0ed5269f Simon Horman 2018-06-26  158  
0ed5269f Simon Horman 2018-06-26  159  	return opts_len;
0ed5269f Simon Horman 2018-06-26  160  }
0ed5269f Simon Horman 2018-06-26  161  

:::::: The code at line 128 was first introduced by commit
:::::: 0ed5269f9e41f495c8e9020c85f5e1644c1afc57 net/sched: add tunnel option support to act_tunnel_key

:::::: TO: Simon Horman <simon.horman@netronome.com>
:::::: CC: David S. Miller <davem@davemloft.net>

---
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