From patchwork Thu May 30 23:27:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matteo Croce X-Patchwork-Id: 13680941 Received: from mail-lj1-f181.google.com (mail-lj1-f181.google.com [209.85.208.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CEE3F4D8C3; Thu, 30 May 2024 23:27:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.181 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717111656; cv=none; b=Lk/g8XBBX82a3GDONPXemx1jspilSLS02VvLCdX28Cbw9jvyLPhlMpAW+PxXgG71B8XGouLaKNcp9npw6gJAWesleI9CXzEO2owwMP1jskRNeW+Y67sIkz6B3Nmv79rC9RJXKm51l9KEwbSiVIBWPhmI5+A8DN8bJod5LkPCmIA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717111656; c=relaxed/simple; bh=J936r+DiOMS3MgFGq6523UYD7iDOXAN2fhSE2VGZZss=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=M9qjJlr3+EYbHwY6naMteYIRzRDTj5zgrIKLMQdg8g49fPvsquzhIx6580DLrDBPxEbVRID95iaHboh1mzl8eCiYRoY5KdM/qy6RTCO5Frp8KAMPHqikDMbaFVYENzRov7E8JRtoKoaOf+/iCccwuek6s5W8pdb/LVnHbM2ggeU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Ejz6rW9g; arc=none smtp.client-ip=209.85.208.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Ejz6rW9g" Received: by mail-lj1-f181.google.com with SMTP id 38308e7fff4ca-2e964acff1aso14759961fa.0; Thu, 30 May 2024 16:27:34 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1717111653; x=1717716453; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=x4p5dezIqTlwyao4nfb4lQwbHXPe29ko3E6Z2p0D7l4=; b=Ejz6rW9gmcDbE3gN8d6v0qyl5ArcGqTaouJxCoUxa1w6j+hLr8bH/gToaT5PAgLfVh G1bcraO0vtvH7Ddt4E2Fhv/ngwbr9jAtZU1jjxLYi7dbyo4/Kfa3Hv/dJUCx6Qdx2hBj v9N0oQTOmjSqahv1UInPEBrwGqna31qQwhknpzIM4DW/upZAdbFjoa8lYCwDQFgFmR/f gjx94pN4rSi5PY8SZKCZyAIwOj3ZYLk2SnwqGraeAe6RqRI5rGpaVm41CdeZYo6GkBAp PnrIvAF/ER9QlHIH/limCn6zDYHR+bNNxkEojMOJg31iiRITvZSaxgzICoLp4jNJEZfL QXsg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1717111653; x=1717716453; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=x4p5dezIqTlwyao4nfb4lQwbHXPe29ko3E6Z2p0D7l4=; b=T+YLUtoK1pqZ0AUMNk6FnwqYxbDVCAOl9W1u5AmsiD8sPxPoZb8/10C4EJxdywzv+N GOwOAlqr/Y1OSslC8uAl/HCqnEkHLEc/HAg1tqrggo6GzgCXvP1IcUQ0LvS+VXWXSnRQ Ts0ss/64DiI9B6AwfMJ2AVX/YInsXUJJCFpU/J8eyVyfHMhPCv5GtEgCbiJ9VyoFV1Xa BFGgqsOMYHyYhjsxH1XWZTWH1r0vwhMroY/F0V9ITyV/Z2nvoTPo8+Nqv5fA0RcqEVQI gWudHg1M3qqLZdmTN79UALqPvl+3v0nOLO4RIXxtpksZh/JDjwE5NVzr2X6EEBhsc/4O m4QA== X-Forwarded-Encrypted: i=1; AJvYcCUDfY5ytEoFomLGGxP2Z8q0z7QSBtSjyVG9lrbSbvRsz8BOdYK/alNFWIqGmjcXKr5jKfcSNaNGpm43oFYiTc23BSYfuFRv87Z/cKEpTGMv4eU1/b2xGb8t0QzZ6SyZs51u4vHF1SAXCm+0f4S5 X-Gm-Message-State: AOJu0YyvYPlolaK0Dl8UzmvQGcJzr0q6fopVElSnspqcvE91wSVMJPIW w4Z+V6w53MjZXRGyfSHUYc39y0ZsH2oL0TSv2+bHT+gepFWXBxCXBUVMvA== X-Google-Smtp-Source: AGHT+IHi05csmUaC/XdePFs1mfj5AfezWi9oiIMwfg2LOseu0xjlzdLecM1APuhYP98qnjfxF4H8SQ== X-Received: by 2002:ac2:5b1e:0:b0:52b:8926:9052 with SMTP id 2adb3069b0e04-52b8955b3e8mr78151e87.5.1717111652620; Thu, 30 May 2024 16:27:32 -0700 (PDT) Received: from lenovo.. (mob-2-43-182-132.net.vodafone.it. [2.43.182.132]) by smtp.gmail.com with ESMTPSA id 4fb4d7f45d1cf-57a35e86c36sm197223a12.54.2024.05.30.16.27.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 30 May 2024 16:27:31 -0700 (PDT) From: technoboy85@gmail.com To: netdev@vger.kernel.org Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Shuah Khan , Shakeel Butt , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Matteo Croce Subject: [PATCH net-next v2 0/2] net: visibility of memory limits in netns Date: Fri, 31 May 2024 01:27:20 +0200 Message-ID: <20240530232722.45255-1-technoboy85@gmail.com> X-Mailer: git-send-email 2.45.1 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Matteo Croce Some programs need to know the size of the network buffers to operate correctly, export the following sysctls read-only in network namespaces: - net.core.rmem_default - net.core.rmem_max - net.core.wmem_default - net.core.wmem_max Matteo Croce (2): net: make net.core.{r,w}mem_{default,max} namespaced selftests: net: tests net.core.{r,w}mem_{default,max} sysctls in a netns changes from v1: - added SPDX header to test - rewrite test with more detailed error messages net/core/sysctl_net_core.c | 75 ++++++++++++--------- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/netns-sysctl.sh | 40 +++++++++++ 3 files changed, 83 insertions(+), 33 deletions(-) create mode 100755 tools/testing/selftests/net/netns-sysctl.sh