Re: git: 2d6114f6d26b - main - libifconfig: Add an SR-IOV VF status query

> On Aug 9, 2026, at 12:20 AM, Herbert J. Skuhra <herbert@gojira.at> wrote:
> 
> On Sun, 09 Aug 2026 08:47:45 +0200, Kevin Bowling wrote:
>> 
>> The branch main has been updated by kbowling:
>> 
>> URL: https://cgit.FreeBSD.org/src/commit/?id=2d6114f6d26bf7dfa5ad94e1db9b09ee7108dc7a
>> 
>> commit 2d6114f6d26bf7dfa5ad94e1db9b09ee7108dc7a
>> Author:     Kevin Bowling <kbowling@FreeBSD.org>
>> AuthorDate: 2026-08-09 02:03:20 +0000
>> Commit:     Kevin Bowling <kbowling@FreeBSD.org>
>> CommitDate: 2026-08-09 06:46:41 +0000
>> 
>>    libifconfig: Add an SR-IOV VF status query
>> 
>>    Provide a public helper which retrieves, unpacks, and validates the
>>    versioned VF status nvlist.  Validate the required VF indices and the
>>    shape and version of driver-specific extension namespaces while allowing
>>    unknown optional fields.
>> 
>>    The ioctl argument is not copied back when the command returns EFBIG.
>>    Start with a practical buffer and grow it geometrically rather than
>>    relying on the required length being observable.
>> 
>>    Use the helper in ifconfig so other consumers share the same transport
>>    and validation behavior.
>> ---
>> lib/libifconfig/Makefile      |   2 +-
>> lib/libifconfig/Symbol.map    |   4 ++
>> lib/libifconfig/libifconfig.c | 129 ++++++++++++++++++++++++++++++++++++++++++
>> lib/libifconfig/libifconfig.h |  11 ++++
>> sbin/ifconfig/ifvfstatus.c    |  60 +++-----------------
>> share/mk/src.libnames.mk      |   4 +-
>> 6 files changed, 154 insertions(+), 56 deletions(-)
> 
> This breaks buildworld:
> 
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_get_vf_status) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_get_number
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_exists_nvlist_array
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_get_nvlist_array
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_exists
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_exists_nvlist
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_get_nvlist
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> 
> ld.lld: error: undefined symbol: FreeBSD_nvlist_next
>>>> referenced by libifconfig.c
>>>>              libifconfig.o:(ifconfig_vf_status_validate) in archive /usr/obj/home/herbert/sources/freebsd/main/src/amd64.amd64/lib/libifconfig/libifconfig.a
> cc: error: linker command failed with exit code 1 (use -v to see invocation)
> *** [rescue] Error code 1

Does this issue exist with MK_CLEAN=yes?
-Enji