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Message-ID: <202112140528.DqSB8cFq-lkp@intel.com>
Date: Tue, 14 Dec 2021 05:14:16 +0800
From: kernel test robot <lkp@...el.com>
To: Florian Westphal <fw@...len.de>, netdev@...r.kernel.org
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org, davem@...emloft.net,
kuba@...nel.org, dsahern@...nel.org,
Florian Westphal <fw@...len.de>
Subject: Re: [PATCH net-next 1/4] fib: remove suppress indirection
Hi Florian,
I love your patch! Yet something to improve:
[auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Florian-Westphal/fib-remove-suppress-indirection-merge-nl-policies/20211213-233429
base: https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git 97884b07122aabb2d6891ce17f54e0e8e94d0bc5
config: hexagon-randconfig-r041-20211213 (https://download.01.org/0day-ci/archive/20211214/202112140528.DqSB8cFq-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b6a2ddb6c8ac29412b1361810972e15221fa021c)
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/0day-ci/linux/commit/585507534b121a41b45edaec79fe6c3d94a50b5f
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Florian-Westphal/fib-remove-suppress-indirection-merge-nl-policies/20211213-233429
git checkout 585507534b121a41b45edaec79fe6c3d94a50b5f
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=hexagon SHELL=/bin/bash net/core/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
>> net/core/fib_rules.c:300:31: error: implicit declaration of function 'fib_info_nhc' [-Werror,-Wimplicit-function-declaration]
struct fib_nh_common *nhc = fib_info_nhc(result->fi, 0);
^
net/core/fib_rules.c:300:31: note: did you mean 'fib_info_put'?
include/net/ip_fib.h:574:20: note: 'fib_info_put' declared here
static inline void fib_info_put(struct fib_info *fi)
^
>> net/core/fib_rules.c:300:25: warning: incompatible integer to pointer conversion initializing 'struct fib_nh_common *' with an expression of type 'int' [-Wint-conversion]
struct fib_nh_common *nhc = fib_info_nhc(result->fi, 0);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> net/core/fib_rules.c:330:27: error: incomplete definition of type 'struct fib6_result'
struct rt6_info *rt = res->rt6;
~~~^
include/net/ipv6_stubs.h:17:8: note: forward declaration of 'struct fib6_result'
struct fib6_result;
^
>> net/core/fib_rules.c:336:8: error: incomplete definition of type 'struct rt6_info'
if (rt->rt6i_idev)
~~^
include/net/netns/ipv6.h:70:9: note: forward declaration of 'struct rt6_info'
struct rt6_info *ip6_null_entry;
^
net/core/fib_rules.c:337:11: error: incomplete definition of type 'struct rt6_info'
dev = rt->rt6i_idev->dev;
~~^
include/net/netns/ipv6.h:70:9: note: forward declaration of 'struct rt6_info'
struct rt6_info *ip6_null_entry;
^
net/core/fib_rules.c:342:8: error: incomplete definition of type 'struct rt6_info'
if (rt->rt6i_dst.plen <= rule->suppress_prefixlen)
~~^
include/net/netns/ipv6.h:70:9: note: forward declaration of 'struct rt6_info'
struct rt6_info *ip6_null_entry;
^
>> net/core/fib_rules.c:354:2: error: implicit declaration of function 'ip6_rt_put_flags' [-Werror,-Wimplicit-function-declaration]
ip6_rt_put_flags(rt, flags);
^
1 warning and 6 errors generated.
vim +/fib_info_nhc +300 net/core/fib_rules.c
291
292 static bool fib4_rule_suppress(struct fib_rule *rule,
293 int flags,
294 struct fib_lookup_arg *arg)
295 {
296 struct fib_result *result = (struct fib_result *)arg->result;
297 struct net_device *dev = NULL;
298
299 if (result->fi) {
> 300 struct fib_nh_common *nhc = fib_info_nhc(result->fi, 0);
301
302 dev = nhc->nhc_dev;
303 }
304
305 /* do not accept result if the route does
306 * not meet the required prefix length
307 */
308 if (result->prefixlen <= rule->suppress_prefixlen)
309 goto suppress_route;
310
311 /* do not accept result if the route uses a device
312 * belonging to a forbidden interface group
313 */
314 if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup)
315 goto suppress_route;
316
317 return false;
318
319 suppress_route:
320 if (!(arg->flags & FIB_LOOKUP_NOREF))
321 fib_info_put(result->fi);
322 return true;
323 }
324
325 static bool fib6_rule_suppress(struct fib_rule *rule,
326 int flags,
327 struct fib_lookup_arg *arg)
328 {
329 struct fib6_result *res = arg->result;
> 330 struct rt6_info *rt = res->rt6;
331 struct net_device *dev = NULL;
332
333 if (!rt)
334 return false;
335
> 336 if (rt->rt6i_idev)
337 dev = rt->rt6i_idev->dev;
338
339 /* do not accept result if the route does
340 * not meet the required prefix length
341 */
342 if (rt->rt6i_dst.plen <= rule->suppress_prefixlen)
343 goto suppress_route;
344
345 /* do not accept result if the route uses a device
346 * belonging to a forbidden interface group
347 */
348 if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup)
349 goto suppress_route;
350
351 return false;
352
353 suppress_route:
> 354 ip6_rt_put_flags(rt, flags);
355 return true;
356 }
357
---
0-DAY CI Kernel Test Service, Intel Corporation
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