linux-kernel - [PATCH net-next v2 0/4] net: uapi: Provide an UAPI definition of 'struct sockaddr'

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Message-Id: <20260120-uapi-sockaddr-v2-0-63c319111cf6@linutronix.de>
Date: Tue, 20 Jan 2026 15:10:30 +0100
From: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
To: Eric Dumazet <edumazet@...gle.com>, 
 Kuniyuki Iwashima <kuniyu@...gle.com>, Paolo Abeni <pabeni@...hat.com>, 
 Willem de Bruijn <willemb@...gle.com>, 
 "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, 
 Simon Horman <horms@...nel.org>, Shuah Khan <shuah@...nel.org>, 
 Matthieu Baerts <matttbe@...nel.org>, Mat Martineau <martineau@...nel.org>, 
 Geliang Tang <geliang@...nel.org>, 
 Mickaël Salaün <mic@...ikod.net>, 
 Günther Noack <gnoack@...gle.com>, 
 Alexei Starovoitov <ast@...nel.org>, Daniel Borkmann <daniel@...earbox.net>, 
 Jesper Dangaard Brouer <hawk@...nel.org>, 
 John Fastabend <john.fastabend@...il.com>, 
 Stanislav Fomichev <sdf@...ichev.me>, Andrii Nakryiko <andrii@...nel.org>, 
 Martin KaFai Lau <martin.lau@...ux.dev>, 
 Eduard Zingerman <eddyz87@...il.com>, Song Liu <song@...nel.org>, 
 Yonghong Song <yonghong.song@...ux.dev>, KP Singh <kpsingh@...nel.org>, 
 Hao Luo <haoluo@...gle.com>, Jiri Olsa <jolsa@...nel.org>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-api@...r.kernel.org, Arnd Bergmann <arnd@...db.de>, 
 linux-kselftest@...r.kernel.org, mptcp@...ts.linux.dev, 
 linux-security-module@...r.kernel.org, bpf@...r.kernel.org, 
 libc-alpha@...rceware.org, Carlos O'Donell <carlos@...hat.com>, 
 Adhemerval Zanella <adhemerval.zanella@...aro.org>, 
 Rich Felker <dalias@...c.org>, klibc@...or.com, 
 Florian Weimer <fweimer@...hat.com>, 
 Thomas Weißschuh <thomas.weissschuh@...utronix.de>
Subject: [PATCH net-next v2 0/4] net: uapi: Provide an UAPI definition of
 'struct sockaddr'

Various UAPI headers reference 'struct sockaddr'. Currently the
definition of this struct is pulled in from the libc header
sys/socket.h. This is problematic as it introduces a dependency
on a full userspace toolchain.

Add a definition of 'struct sockaddr' to the UAPI headers.
Before that, reorder some problematic header inclusions in the selftests.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@...utronix.de>
---
Changes in v2:
- Fix compilation failures in BPF samples and selftests
- Link to v1: https://lore.kernel.org/r/20260105-uapi-sockaddr-v1-1-b7653aba12a5@linutronix.de

---
Thomas Weißschuh (4):
      selftests: net: Move some UAPI header inclusions after libc ones
      selftests/landlock: Move some UAPI header inclusions after libc ones
      samples/bpf: Move some UAPI header inclusions after libc ones
      net: uapi: Provide an UAPI definition of 'struct sockaddr'

 include/linux/socket.h                             | 10 ----------
 include/uapi/linux/if.h                            |  4 ----
 include/uapi/linux/libc-compat.h                   | 12 ++++++++++++
 include/uapi/linux/socket.h                        | 14 ++++++++++++++
 samples/bpf/xdp_adjust_tail_user.c                 |  6 ++++--
 samples/bpf/xdp_fwd_user.c                         |  7 ++++---
 samples/bpf/xdp_router_ipv4_user.c                 |  6 +++---
 samples/bpf/xdp_sample_user.c                      | 15 ++++++++-------
 samples/bpf/xdp_tx_iptunnel_user.c                 |  4 ++--
 tools/testing/selftests/landlock/audit.h           |  7 ++++---
 tools/testing/selftests/net/af_unix/diag_uid.c     |  9 +++++----
 tools/testing/selftests/net/busy_poller.c          |  3 ++-
 tools/testing/selftests/net/mptcp/mptcp_diag.c     | 11 ++++++-----
 tools/testing/selftests/net/nettest.c              |  4 ++--
 tools/testing/selftests/net/tcp_ao/icmps-discard.c |  6 +++---
 tools/testing/selftests/net/tcp_ao/lib/netlink.c   |  9 +++++----
 tools/testing/selftests/net/tun.c                  |  5 +++--
 17 files changed, 77 insertions(+), 55 deletions(-)
---
base-commit: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
change-id: 20251222-uapi-sockaddr-cf10e7624729

Best regards,
-- 
Thomas Weißschuh <thomas.weissschuh@...utronix.de>