[moderation/CI] Re: hsr: Add additional info to send/ receive skbs

[syzbot ci <syzbot+cib68faf1da08cba19@syzkaller.appspotmail.com>]

syzbot ci has tested the following series

[v2] hsr: Add additional info to send/ receive skbs
https://lore.kernel.org/all/20260309-hsr_ptp-v2-0-798262aad3a4@linutronix.de
* [PATCH RFC net-next v2 1/2] hsr: Allow to send a specific port and with HSR header
* [PATCH RFC net-next v2 2/2] af_packet: Add port specific handling for HSR

and found the following issue:
kernel build error

Full report is available here:
https://ci.syzbot.org/series/bd2344c8-000c-4973-9c61-c1487f460d8f

***

kernel build error

tree:      bpf-next
URL:       https://kernel.googlesource.com/pub/scm/linux/kernel/git/bpf/bpf-next.git
base:      1f318b96cc84d7c2ab792fcc0bfd42a7ca890681
arch:      amd64
compiler:  Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config:    https://ci.syzbot.org/builds/8f8db96c-13f9-4426-bdfe-fbfcae8c11cd/config

./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]
./include/linux/if_hsr.h:58:30: error: use of undeclared identifier 'SKB_EXT_HSR'
./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]
./include/linux/if_hsr.h:71:30: error: use of undeclared identifier 'SKB_EXT_HSR'
./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]
./include/linux/if_hsr.h:85:30: error: use of undeclared identifier 'SKB_EXT_HSR'
./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]
./include/linux/if_hsr.h:99:29: error: use of undeclared identifier 'SKB_EXT_HSR'
./include/linux/skbuff.h:5034:7: error: conflicting types for 'skb_ext_add'
./include/linux/skbuff.h:5079:21: error: conflicting types for 'skb_ext_find'

***

If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
  Tested-by: syzbot@syzkaller.appspotmail.com

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