* [mda-next:icssg-dev 1/8] include/linux/if_hsr.h:54:46: warning: declaration of 'struct sk_buff' will not be visible outside of this function
@ 2026-05-03 15:55 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-05-03 15:55 UTC (permalink / raw)
To: Sebastian Andrzej Siewior; +Cc: llvm, oe-kbuild-all, MD Danish Anwar
tree: https://git.kernel.org/pub/scm/linux/kernel/git/mda/linux-next.git icssg-dev
head: a5d36e904451db02a17787219fd06b6d2ba16f1b
commit: 756ed4bc4a527cdddc3f9f09240637ceb3408645 [1/8] hsr: Allow to send a specific port and with HSR header
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20260503/202605032345.yoOw2A1g-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260503/202605032345.yoOw2A1g-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/202605032345.yoOw2A1g-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from net/dsa/dsa.c:12:
>> include/linux/if_hsr.h:54:46: warning: declaration of 'struct sk_buff' will not be visible outside of this function [-Wvisibility]
54 | static inline bool hsr_skb_has_header(struct sk_buff *skb)
| ^
include/linux/if_hsr.h:58:12: error: call to undeclared function 'skb_ext_find'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
58 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:58:30: error: use of undeclared identifier 'SKB_EXT_HSR'
58 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:64:52: warning: declaration of 'struct sk_buff' will not be visible outside of this function [-Wvisibility]
64 | static inline unsigned int hsr_skb_has_port(struct sk_buff *skb)
| ^
include/linux/if_hsr.h:71:12: error: call to undeclared function 'skb_ext_find'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
71 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:71:30: error: use of undeclared identifier 'SKB_EXT_HSR'
71 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:77:51: warning: declaration of 'struct sk_buff' will not be visible outside of this function [-Wvisibility]
77 | static inline bool hsr_skb_get_header_port(struct sk_buff *skb, bool *header,
| ^
include/linux/if_hsr.h:85:12: error: call to undeclared function 'skb_ext_find'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
85 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:85:30: error: use of undeclared identifier 'SKB_EXT_HSR'
85 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:94:51: warning: declaration of 'struct sk_buff' will not be visible outside of this function [-Wvisibility]
94 | static inline bool hsr_skb_add_header_port(struct sk_buff *skb, bool header,
| ^
include/linux/if_hsr.h:99:12: error: call to undeclared function 'skb_ext_add'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
99 | ptp_ext = skb_ext_add(skb, SKB_EXT_HSR);
| ^
include/linux/if_hsr.h:99:29: error: use of undeclared identifier 'SKB_EXT_HSR'
99 | ptp_ext = skb_ext_add(skb, SKB_EXT_HSR);
| ^
In file included from net/dsa/dsa.c:15:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:44:
include/linux/skbuff.h:5060:7: error: conflicting types for 'skb_ext_add'
5060 | void *skb_ext_add(struct sk_buff *skb, enum skb_ext_id id);
| ^
include/linux/if_hsr.h:99:12: note: previous implicit declaration is here
99 | ptp_ext = skb_ext_add(skb, SKB_EXT_HSR);
| ^
In file included from net/dsa/dsa.c:15:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:44:
include/linux/skbuff.h:5105:21: error: conflicting types for 'skb_ext_find'
5105 | static inline void *skb_ext_find(const struct sk_buff *skb, enum skb_ext_id id)
| ^
include/linux/if_hsr.h:58:12: note: previous implicit declaration is here
58 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
| ^
In file included from net/dsa/dsa.c:15:
In file included from include/linux/netdevice.h:44:
In file included from include/uapi/linux/neighbour.h:6:
In file included from include/linux/netlink.h:9:
In file included from include/net/scm.h:13:
In file included from include/net/compat.h:8:
include/linux/compat.h:454:22: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from net/dsa/dsa.c:15:
In file included from include/linux/netdevice.h:44:
In file included from include/uapi/linux/neighbour.h:6:
In file included from include/linux/netlink.h:9:
In file included from include/net/scm.h:13:
In file included from include/net/compat.h:8:
include/linux/compat.h:454:10: warning: array index 7 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:454:42: warning: array index 6 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
include/linux/compat.h:130:2: note: array 'sig' declared here
130 | compat_sigset_word sig[_COMPAT_NSIG_WORDS];
| ^
include/linux/compat.h:454:53: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
454 | case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
| ^
In file included from net/dsa/dsa.c:15:
In file included from include/linux/netdevice.h:44:
In file included from include/uapi/linux/neighbour.h:6:
In file included from include/linux/netlink.h:9:
In file included from include/net/scm.h:13:
In file included from include/net/compat.h:8:
include/linux/compat.h:456:22: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
456 | case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
| ^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
22 | unsigned long sig[_NSIG_WORDS];
vim +54 include/linux/if_hsr.h
45
46 #if IS_ENABLED(CONFIG_HSR)
47 extern bool is_hsr_master(struct net_device *dev);
48 extern int hsr_get_version(struct net_device *dev, enum hsr_version *ver);
49 struct net_device *hsr_get_port_ndev(struct net_device *ndev,
50 enum hsr_port_type pt);
51 int hsr_get_port_type(struct net_device *hsr_dev, struct net_device *dev,
52 enum hsr_port_type *type);
53
> 54 static inline bool hsr_skb_has_header(struct sk_buff *skb)
55 {
56 struct hsr_ptp_ext *ptp_ext;
57
58 ptp_ext = skb_ext_find(skb, SKB_EXT_HSR);
59 if (!ptp_ext)
60 return false;
61 return ptp_ext->header;
62 }
63
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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