From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from stravinsky.debian.org (stravinsky.debian.org [82.195.75.108]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 71E273F074A; Thu, 16 Jul 2026 13:01:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=82.195.75.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784206915; cv=none; b=AuIXKZNhBjsgEPfdMQ4qhyc3/fI3UT4aMchN1NhE9+Cc48pEfKPpcAFWWK0K/mk0WipXtvaCQZZs4cvCg7hoK3nctm35SdwnkObbXPGSDuSGmvtq99buI2SgwUZTOM1tddVHPB4z4EZC1EgsumszeoQx0yVDvG20Boh/AIzQc4g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784206915; c=relaxed/simple; bh=U4GAGj2YU4eWmcdtql84XfYU7hSkRNHblJ6pBV62o30=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=k02THZg1DmeXwdRPHakihGqzBYXv/2mIN2aYJCq6CITK4Tc6pay0O22aKyBjuddAG1s+ufjnRvBtcCBEBf3GG6yppxn+S/Z1kQK8G9zb4NECovq6LDcRan9MlPvLLBLXlG2+ZgM9yu3XNzNOxuMbT3RxepliRCB6T1yy/BFA4P4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=debian.org; spf=pass smtp.mailfrom=debian.org; dkim=pass (2048-bit key) header.d=debian.org header.i=@debian.org header.b=vXfhm9wZ; arc=none smtp.client-ip=82.195.75.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=debian.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=debian.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=debian.org header.i=@debian.org header.b="vXfhm9wZ" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=debian.org; s=smtpauto.stravinsky; h=X-Debian-User:Cc:To:Content-Transfer-Encoding: Content-Type:MIME-Version:Message-Id:Date:Subject:From:Reply-To:Content-ID: Content-Description:In-Reply-To:References; bh=/hcMmjX6gOl4gfgW6B1YWlbVzKj0O33UhDJ5XPIjAT4=; b=vXfhm9wZN9VRPszj8LUxvvu99U RHCNsreGFDtl9eSyHrp/wzsiX1FAEIe8fb+o7Ww+AuJS6AhhWl3gnu9pZHbKL0ObW0C+YWvLdACzV zTSmzbeZdORRM9D+1MdGbqfqQOG/u3QQ8aGqIT+B6ayuZXaPaNs6DBk0Ht//7s4Puqj1FcbjcPrNV uQJae7hgxNsv8zhF8D7DyMdXY9UheuGtsI8iXiYZ8De4QiAgv7Hou7JkWB8o4lTMAdtEwTtj/fsZh RE4YBUvQJfDrw6K7NgUe3zhLfj16PAfX6P4KApzasVRuyYu+SDaHPMjVjitX/J7VDEvgGyhxNUzSb 5tJ8oEVw==; Received: from authenticated-user by stravinsky.debian.org with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.96) (envelope-from ) id 1wkLij-003q60-0I; Thu, 16 Jul 2026 13:01:45 +0000 From: Breno Leitao Subject: [PATCH net-next 0/7] net: convert rawv6, ieee802154, phonet and tls getsockopt to sockopt_t Date: Thu, 16 Jul 2026 05:59:58 -0700 Message-Id: <20260716-getsockopt_phase4-v1-0-4f45cb12dce7@debian.org> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAM/VWGoC/x3MUQrDIBAFwKss7zvCKmnaepVSithNIgUVV0Ig5 O6BzgHmgEpLovB0oMmWNJUMT3YgxDXkRUz6whMcu4nv9mYW6Vrir9T+qWtQGY19sONnnOPEAQO hNpnT/j9fyNJNlr3jfZ4XATjn3G0AAAA= X-Change-ID: 20260715-getsockopt_phase4-180209cfc60a To: sdf@fomichev.me, "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Alexander Aring , Stefan Schmidt , Miquel Raynal , Remi Denis-Courmont , =?utf-8?q?R=C3=A9mi_Denis-Courmont?= , John Fastabend , Sabrina Dubroca , Shuah Khan Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wpan@vger.kernel.org, linux-kselftest@vger.kernel.org, Breno Leitao , kernel-team@meta.com X-Mailer: b4 0.16-dev-d5d98 X-Developer-Signature: v=1; a=openpgp-sha256; l=2226; i=leitao@debian.org; h=from:subject:message-id; bh=U4GAGj2YU4eWmcdtql84XfYU7hSkRNHblJ6pBV62o30=; b=owEBbQKS/ZANAwAIATWjk5/8eHdtAcsmYgBqWNY0MNsmeuJOzouE6Lb9bvlX3qczyUYBbuxOk w3GPbAATKiJAjMEAAEIAB0WIQSshTmm6PRnAspKQ5s1o5Of/Hh3bQUCaljWNAAKCRA1o5Of/Hh3 bWC6D/9Ce+QxfE2apqWaAXFIYHeBF3cU8FTVsNDpSYXAQY1THiYLTVg7EZ2cgKSFsRMuJAhGC96 zy7iORE2n5kw9+GbAX7fax1qFwYe8mIplHlIaBclznrAN4Pra/EilWxsxtu0JziMWPcRg0VQTrI 3esdSzkAZsVLNtA1f1HkE4Z7RxCgXujItyaX3sXMQgSt9OavGCxOjtiE2V0z0E117PEDOiS9esS jZ6PM3PhsskTi3KGxtN6te2HepM+hxkD8h6FHeBDUR55ZdYzCORbxBNYtyfGJavFdvDBWeFDWAx pXQ0iIYIZjlQ+gTOEkPp22XrJSIKpQP/TedrtQ5Dx1YoqSoJQb4S8ik0dR6KpdEYtC0bqiI8myk Cx4/oVU1P8PhZ7z4XDa+ZE4abjVZrwWVeIKKr+FMUwBRGr/HokBBm51e2cLotJMLZJWU6Rm4i0g H73sqcNna/GwYrUd0HQpLOtL3IHPYDrR32mGXqqzsZ5Zb0GcqKgEIsqTxEEOlnV69G8rsIhva3J NsZ77klb9K2G8xDUKUhancC8QSm1nDxNB64/IHe76ExA0G5Lt5/no/aDXdm4kV+4t5OtGGWmR0p 5ergg0TzfikPA9coW7YSXYoQIzg7GeMTAu7RwGvksZQH2GATAw9GCe6HImjorNS7zSGsJ/Isq1F Z8lA/KLNInD1uGg== X-Developer-Key: i=leitao@debian.org; a=openpgp; fpr=AC8539A6E8F46702CA4A439B35A3939FFC78776D X-Debian-User: leitao Now that sockopt_init_user() was already merged, builds a user-backed sockopt_t from the __user pair. A getsockopt leaf can then take a sockopt_t behind a thin __user wrapper: the wrapper builds it, calls the leaf, and writes the length back to optlen. The leaf copies with copy_to_iter() instead of copy_to_user(). Convert four more leaves the way udp and raw already were: ipv6 raw (do_rawv6_getsockopt), ieee802154 dgram, phonet pep, and tls (do_tls_getsockopt and its per-option helpers). Converting phonet surfaced a pre-existing bug: pep_getsockopt() clamps the length it reports but writes a full int with put_user(), overrunning an optval buffer shorter than sizeof(int). It is fixed in its own patch, with a Fixes: tag, before the phonet conversion, so it can be backported alone. The last patch adds getsockopt_iter selftest fixtures for rawv6, ieee802154, phonet and tls, checking the returned length and errno across exact, oversized and short buffers, an unknown optname and a bad level. For full motivation about these changes, please check the initial thread at link https://lore.kernel.org/all/20260401-getsockopt-v2-0-611df6771aff@debian.org/#t Signed-off-by: Breno Leitao --- Breno Leitao (7): ipv6: raw: drop unused level argument from do_rawv6_getsockopt ipv6: raw: convert do_rawv6_getsockopt to sockopt_t ieee802154: convert dgram getsockopt to sockopt_t phonet: pep: do not write beyond optlen in getsockopt phonet: pep: convert getsockopt to sockopt_t tls: convert getsockopt to sockopt_t selftests: net: getsockopt_iter: cover rawv6, ieee802154, phonet and tls net/ieee802154/socket.c | 38 ++- net/ipv6/raw.c | 27 +- net/phonet/pep.c | 36 ++- net/tls/tls_main.c | 80 +++-- tools/testing/selftests/net/getsockopt_iter.c | 424 ++++++++++++++++++++++++++ 5 files changed, 533 insertions(+), 72 deletions(-) --- base-commit: f6f3b36c15ed44de1fbb44e645e4fae8c4a4453e change-id: 20260715-getsockopt_phase4-180209cfc60a Best regards, -- Breno Leitao