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X-CSE-ConnectionGUID: hLKYxv8iQlG5EY/h3CYnvw== X-CSE-MsgGUID: QwZC4+kTQOig3SK2vOrTrw== X-IronPort-AV: E=McAfee;i="6800,10657,11774"; a="90065786" X-IronPort-AV: E=Sophos;i="6.23,213,1770624000"; d="scan'208";a="90065786" Received: from orviesa005.jf.intel.com ([10.64.159.145]) by fmvoesa104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 May 2026 23:32:13 -0700 X-CSE-ConnectionGUID: ap931OgCSCK2aougZg0xzA== X-CSE-MsgGUID: xvNJaGkJSRqfwLwJKAzYUQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,213,1770624000"; d="scan'208";a="240220990" Received: from lkp-server01.sh.intel.com (HELO 781826d00641) ([10.239.97.150]) by orviesa005.jf.intel.com with ESMTP; 02 May 2026 23:32:11 -0700 Received: from kbuild by 781826d00641 with local (Exim 4.98.2) (envelope-from ) id 1wJQN6-000000002G5-3CAZ; Sun, 03 May 2026 06:32:08 +0000 Date: Sun, 03 May 2026 14:31:41 +0800 From: kernel test robot To: Sebastian Andrzej Siewior Cc: oe-kbuild-all@lists.linux.dev, MD Danish Anwar Subject: [mda-next:icssg-dev 1/8] include/linux/if_hsr.h:58:19: error: implicit declaration of function 'skb_ext_find' Message-ID: <202605031429.Vd6jaWrJ-lkp@intel.com> User-Agent: s-nail v14.9.25 Precedence: bulk X-Mailing-List: oe-kbuild-all@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: 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: m68k-allmodconfig (https://download.01.org/0day-ci/archive/20260503/202605031429.Vd6jaWrJ-lkp@intel.com/config) compiler: m68k-linux-gcc (GCC) 15.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260503/202605031429.Vd6jaWrJ-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202605031429.Vd6jaWrJ-lkp@intel.com/ All error/warnings (new ones prefixed by >>): In file included from net/dsa/dsa.c:12: >> include/linux/if_hsr.h:54:46: warning: 'struct sk_buff' declared inside parameter list will not be visible outside of this definition or declaration 54 | static inline bool hsr_skb_has_header(struct sk_buff *skb) | ^~~~~~~ include/linux/if_hsr.h: In function 'hsr_skb_has_header': >> include/linux/if_hsr.h:58:19: error: implicit declaration of function 'skb_ext_find' [-Wimplicit-function-declaration] 58 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); | ^~~~~~~~~~~~ >> include/linux/if_hsr.h:58:37: error: 'SKB_EXT_HSR' undeclared (first use in this function) 58 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); | ^~~~~~~~~~~ include/linux/if_hsr.h:58:37: note: each undeclared identifier is reported only once for each function it appears in include/linux/if_hsr.h: At top level: include/linux/if_hsr.h:64:52: warning: 'struct sk_buff' declared inside parameter list will not be visible outside of this definition or declaration 64 | static inline unsigned int hsr_skb_has_port(struct sk_buff *skb) | ^~~~~~~ include/linux/if_hsr.h: In function 'hsr_skb_has_port': include/linux/if_hsr.h:71:37: error: 'SKB_EXT_HSR' undeclared (first use in this function) 71 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); | ^~~~~~~~~~~ include/linux/if_hsr.h: At top level: include/linux/if_hsr.h:77:51: warning: 'struct sk_buff' declared inside parameter list will not be visible outside of this definition or declaration 77 | static inline bool hsr_skb_get_header_port(struct sk_buff *skb, bool *header, | ^~~~~~~ include/linux/if_hsr.h: In function 'hsr_skb_get_header_port': include/linux/if_hsr.h:85:37: error: 'SKB_EXT_HSR' undeclared (first use in this function) 85 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); | ^~~~~~~~~~~ include/linux/if_hsr.h: At top level: include/linux/if_hsr.h:94:51: warning: 'struct sk_buff' declared inside parameter list will not be visible outside of this definition or declaration 94 | static inline bool hsr_skb_add_header_port(struct sk_buff *skb, bool header, | ^~~~~~~ include/linux/if_hsr.h: In function 'hsr_skb_add_header_port': >> include/linux/if_hsr.h:99:19: error: implicit declaration of function 'skb_ext_add' [-Wimplicit-function-declaration] 99 | ptp_ext = skb_ext_add(skb, SKB_EXT_HSR); | ^~~~~~~~~~~ include/linux/if_hsr.h:99:36: error: 'SKB_EXT_HSR' undeclared (first use in this function) 99 | ptp_ext = skb_ext_add(skb, SKB_EXT_HSR); | ^~~~~~~~~~~ In file included from include/net/net_namespace.h:44, from include/linux/netdevice.h:38, from net/dsa/dsa.c:15: include/linux/skbuff.h: At top level: >> include/linux/skbuff.h:5060:7: error: conflicting types for 'skb_ext_add'; have 'void *(struct sk_buff *, enum skb_ext_id)' 5060 | void *skb_ext_add(struct sk_buff *skb, enum skb_ext_id id); | ^~~~~~~~~~~ include/linux/if_hsr.h:99:19: note: previous implicit declaration of 'skb_ext_add' with type 'int()' 99 | ptp_ext = skb_ext_add(skb, SKB_EXT_HSR); | ^~~~~~~~~~~ >> include/linux/skbuff.h:5105:21: error: conflicting types for 'skb_ext_find'; have 'void *(const struct sk_buff *, enum skb_ext_id)' 5105 | static inline void *skb_ext_find(const struct sk_buff *skb, enum skb_ext_id id) | ^~~~~~~~~~~~ include/linux/if_hsr.h:58:19: note: previous implicit declaration of 'skb_ext_find' with type 'int()' 58 | ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); | ^~~~~~~~~~~~ vim +/skb_ext_find +58 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 64 static inline unsigned int hsr_skb_has_port(struct sk_buff *skb) 65 { 66 struct hsr_ptp_ext *ptp_ext; 67 68 if (!skb) 69 return 0; 70 71 ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); 72 if (!ptp_ext) 73 return 0; 74 return ptp_ext->port; 75 } 76 77 static inline bool hsr_skb_get_header_port(struct sk_buff *skb, bool *header, 78 enum hsr_port_type *port_type) 79 { 80 struct hsr_ptp_ext *ptp_ext; 81 82 *port_type = HSR_PT_NONE; 83 *header = false; 84 85 ptp_ext = skb_ext_find(skb, SKB_EXT_HSR); 86 if (!ptp_ext) 87 return false; 88 89 *port_type = ptp_ext->port; 90 *header = ptp_ext->header; 91 return true; 92 } 93 94 static inline bool hsr_skb_add_header_port(struct sk_buff *skb, bool header, 95 enum hsr_port_type port) 96 { 97 struct hsr_ptp_ext *ptp_ext; 98 > 99 ptp_ext = skb_ext_add(skb, SKB_EXT_HSR); 100 if (!ptp_ext) 101 return false; 102 ptp_ext->port = port; 103 ptp_ext->header = header; 104 return true; 105 } 106 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki