From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io1-xd32.google.com (mail-io1-xd32.google.com [IPv6:2607:f8b0:4864:20::d32]) by sourceware.org (Postfix) with ESMTPS id AF2F03858D3C for ; Mon, 2 May 2022 14:11:16 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org AF2F03858D3C Authentication-Results: sourceware.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: sourceware.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-io1-xd32.google.com with SMTP id h85so4796217iof.12 for ; Mon, 02 May 2022 07:11:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=mime-version:from:date:message-id:subject:to; bh=5DovMfZYUE8P6gMnV/zgv8LDKjhiTvnbZAMLdihJ5u0=; b=P89WtNdvRbcuxVOibWX6Q86DyhY7U+w8zhFfn9cXDrKeI5Qalxh16/XpK0ahj2JTVl nggabL6+yhurLgiriIhhPOZwCz8NUkg5MGORm+heeswasOZhMQeK1lGVkjpEor2Uumwd To3979Pm+3SA+Jlyr/e/cft+d3AdxDvmJ6YTy6rwpZb4dSBVCRCryK4Yk53ZDGuFq40r pbgibUVjg7fxvE0fb7v+VeYTZIuC4FCbeNE918pvvmF+9/yiduHhbD6xF5SOvWCmpf/R gWEAYa48S72t2lPng5yBVGotc02rXMTmmxoRPxW0nOQNgZExPsXHPOXWyz4GWeY7NoWV spDw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=5DovMfZYUE8P6gMnV/zgv8LDKjhiTvnbZAMLdihJ5u0=; b=uP1jLVSR2Og1LbGInnfcNv0Z82PXZbvQDYFDxFbHXQzz4AWvoeH/XOon8DO4tefjdu cE5YeP/V9Es3yJlOOkUVyXNf3l/nnEACtmTAwKLa9JxXdMoLMAFkoKxZ+jgkFvL9CStq Kxp9M1LNgvSpXUkMic08AIHLzC9YT0KB8RJoTzqMl8gdPS/TRIO1GbluGzvv5TjNKcsJ 4k9aAw4XOVlUExcM2qpBEie/u5Q2EQDnvj4UBmPe4l1YRJ709oWaxZaTqoCkU8p3Z/br IEeUX/kHKtS23BfrhUck8ZpUyLBVEqhZ9RY0A0mwTh/ibAD1lUBvGxxI/NGKbcCj6I0n 9yMA== X-Gm-Message-State: AOAM531TIMYeAV8sD8CtkQg0T6IbVoettZOn3vf/MvGobF0wh7xvv7iV 6mAl33u0NYAbzgpCOhhe3YzpANaCcghEboVHwXtWroTNRVQ= X-Google-Smtp-Source: ABdhPJxN/CXHfmU1kxS7d0IW/pb/bbA/XFVu90cKA4iaeUP0bpdY6/UI3q8uQElE/6RIzXafED0VBN+cxg90sUVURJI= X-Received: by 2002:a05:6638:3043:b0:314:7ce2:4a6e with SMTP id u3-20020a056638304300b003147ce24a6emr5033498jak.258.1651500675359; Mon, 02 May 2022 07:11:15 -0700 (PDT) MIME-Version: 1.0 From: Rony Ross Date: Mon, 2 May 2022 17:11:04 +0300 Message-ID: Subject: Supporting new Windows UDP offload features To: cygwin@cygwin.com Content-Type: text/plain; charset="UTF-8" X-Spam-Status: No, score=-0.6 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: cygwin@cygwin.com X-Mailman-Version: 2.1.29 Precedence: list List-Id: General Cygwin discussions and problem reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 May 2022 14:11:18 -0000 Hello, Starting from Windows 10 version 2004, Windows supports UDP segmentation offload and UDP receive coalescing as described in https://docs.microsoft.com/en-us/windows-hardware/drivers/network/udp-segmentation-offload-uso-#ndis-interface-changes and in https://docs.microsoft.com/en-us/windows/win32/winsock/ipproto-udp-socket-options It seems that in order to support UDP segmentaion offload and UDP receive coalescing, cygwin needs to add support for UDP_SEND_MSG_SIZE and UDP_RECV_MAX_COALESCED_SIZE socket options for IPPROTO_UDP Could you please add it? If so, could you please estimate when it will be available? Thanks you, Rony