[PATCH net-next 0/3] net: Convert AF_NETLINK and AF_VSOCK to getsockopt_iter API

[Breno Leitao <leitao@debian.org>]

Continue the work to convert protocols to the new getsockopt_iter API.

Convert AF_NETLINK and AF_VSOCK getsockopt implementations to the new
sockopt_t/getsockopt_iter API, and add kselftests that verify the size
and errno semantics are preserved across the conversion.

I chose these two socket families because they are probably one of the
most used  protocols,, ensuring that any potential bugs will be
discovered and reported quickly.

The selftest was added as suggested by Stanislav Fomichev in [1].
Link: https://lore.kernel.org/all/adkSnyihmD1Atfcf@devvm17672.vll0.facebook.com/ [1]

Signed-off-by: Breno Leitao <leitao@debian.org>
---
Breno Leitao (3):
      netlink: convert to getsockopt_iter
      vsock: convert to getsockopt_iter
      net: selftests: add getsockopt_iter regression tests

 net/netlink/af_netlink.c                      |  21 +--
 net/vmw_vsock/af_vsock.c                      |  16 +-
 tools/testing/selftests/net/Makefile          |   1 +
 tools/testing/selftests/net/getsockopt_iter.c | 213 ++++++++++++++++++++++++++
 4 files changed, 232 insertions(+), 19 deletions(-)
---
base-commit: edf4bee4215a173c0534d1851d7523d827149f9e
change-id: 20260501-getsock_one-a62758a9ba25
prerequisite-change-id: 20260501-getsock_iter_first-87f6a74c24e0:v1

Best regards,
--  
Breno Leitao <leitao@debian.org>