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 8681E31E820; Mon, 27 Jul 2026 10:06:59 +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=1785146821; cv=none; b=OBN6gb01W9l/Db1G2H/AWjRqCa9Xa1Zpw1VhmjGd3pabFu9JjbVwqoNnomA1lp6Qp97JHiYMTnKMMbJOXktv2dPd1ps7bexvvuxBd0PvLr7XFYUVDJ7mwqZRiwO2fKgH8S953FMVyxeWTOP1AlyjdX8fc80SOTZlj0nf7oqoY3g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785146821; c=relaxed/simple; bh=4NPqPcWpwotJnjVLLDUBduZOBxwBnvIQGGsHSUwfPyk=; h=From:Subject:Date:Message-Id:MIME-Version:Content-Type:To:Cc; b=cJyOMjCTFT8RE0OPCroK5lHPIdTdx6ve5F07I2oTStBtH3ByBtAMEHZc34rIcclh9SOuG1Un9KfPY3AmSNx25r9q6uqXAOzgYf6J7bTZd1aVOhsi8bYluPH4XAASp5DX+7gdw4rq43AkVWnTy5G59fqeKzfrt8/FVJT5uFLlEPM= 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=NLWJrUXi; 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="NLWJrUXi" 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=GTyQHv3io296hlH7liLIH29JJ5mx+n2lNYZEFK3Ltuk=; b=NLWJrUXi309NY17PIxSi3Pjfk4 fJN/bxrb6bjUvbYBRMLRB3vUSUQMnDzN922gTI9kv31T7k2snqH3Io1lTG+DbX1ExE1avg4uKJBSh lnoUlu2S0PxiaOE97qZVFitRC0Uob0iebzD3M95FEzG6pSqZ46X+YoEYJX4OKDOCCsfJFwWfytPRP joJ4gUanLK6cpciYA0hkq0iiUTXxTcDutk8lnILHr8SZ2mMBylNL83YepLj37cUJdkRvqMAopzeeZ jiIEeT3Jkwn/w68GMrD4pO4FRNM9gi5xL7i2RqABaJuKGJOHKhCmOmDOgzpBT2/Mg9slMyF7Tpvd8 ncB59fEA==; 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 1woIEW-006os9-38; Mon, 27 Jul 2026 10:06:54 +0000 From: Breno Leitao Subject: [PATCH net-next v3 0/7] net: convert rawv6, ieee802154, phonet and tls getsockopt to sockopt_t Date: Mon, 27 Jul 2026 03:06:34 -0700 Message-Id: <20260727-getsockopt_phase4-v3-0-e89627544639@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=H4sIAKstZ2oC/23NTQrDIBBA4avIrGMZbf6aVe9RSjFmTKSgQUVSQ u5ekC5a6PrB93aIFCxFGNgOgbKN1jsY2LlioBflZuJ2goGBRNliJxo+U4peP/2aHuuiItVc9Cj xoo1uUUHFYA1k7FbMGzhK3NGW4F4xWGxMPrzKLIvSP277x82CI69N3ehRyElTd51otMqdfJgLl +UXIfEfITnyXmFvtFE4dfKHOI7jDSsokQUAAQAA 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, Joe Damato , =?utf-8?q?R=C3=A9mi_Denis-Courmont?= X-Mailer: b4 0.16-dev-d5d98 X-Developer-Signature: v=1; a=openpgp-sha256; l=2543; i=leitao@debian.org; h=from:subject:message-id; bh=4NPqPcWpwotJnjVLLDUBduZOBxwBnvIQGGsHSUwfPyk=; b=owEBbQKS/ZANAwAIATWjk5/8eHdtAcsmYgBqZy22YWF3FuS8kdCv4poHO8A8p0UXAxGY7nXPU BmynVWYOVOJAjMEAAEIAB0WIQSshTmm6PRnAspKQ5s1o5Of/Hh3bQUCamcttgAKCRA1o5Of/Hh3 bZrOD/915zPBkHco03W0L7IaQhHTq4Y0gER43Ch8QubBg3tGLY/GLul9xNsfpGrQufpZUIEJQYv aRXHEW2+WKm6c7cQIBQ6oSCoGlpIKdrS9pkHpTR8UG2A83YjW1+6O39FH/HssIh5cEVnTU/BCKs ieu/o7cMtQL+20+q3d3kRasGvDThHVrv/C27CoL4DBri5edrhWdey8V9dcFOFY9Uu9wk2jFZx6v curfCK3dAz3ynUrN2h/a3wLn0uKiUx/ulMQQwSkGy832/CBmmNbKOTbWdlEaocddE/r5Nsb3qPW /jzrHt9OTvzaRochx5p+9KsNXV1tAlkmCIA1GkH9Wp0RIHtJ2T5E491DgQs6MUq9sPmotCoWEvN 8kW5BSqbwzJVLCOf0yB/UR5jg7q5Oc+RPrXcAt9GH/WY81WVeWtCRiAnEoxDQ1CV8Mk4PzKIQyk adQkclsB7RIMADZbw7Y0iG/1v5mvuRGvUxBLBeOCnpk5IcUxyGuEWvjyxBVY9/lkwmzmkOn4fmN vrdOrcC5v2mX+YbD7Vl8xr4vl3UIwf159nMK2wmFXC2QbgzfEZNGKy9Z2pVYk0FnctW6NSxRkPr ocym0qHs/hF3pyR1+81vqj4vyYrXBnK8iWPUCeTyH0zXlBevGnYYkoWuARIzqXoMMAcu9PJbrax 6BvCgcy9NXVlraA== 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 --- Changes in v3: - min_t() -> umin() on ieee802154/rawv6 (Joe) - Link to v2: https://patch.msgid.link/20260720-getsockopt_phase4-v2-0-8a08fcfa0d72@debian.org Changes in v2: - Replace min_t() by umin() (David) - Link to v1: https://patch.msgid.link/20260716-getsockopt_phase4-v1-0-4f45cb12dce7@debian.org --- 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 | 29 +- net/phonet/pep.c | 36 ++- net/tls/tls_main.c | 80 +++-- tools/testing/selftests/net/getsockopt_iter.c | 424 ++++++++++++++++++++++++++ 5 files changed, 534 insertions(+), 73 deletions(-) --- base-commit: f6f3b36c15ed44de1fbb44e645e4fae8c4a4453e change-id: 20260715-getsockopt_phase4-180209cfc60a Best regards, -- Breno Leitao