From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6652BC76196 for ; Thu, 6 Apr 2023 18:39:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240251AbjDFSi6 (ORCPT ); Thu, 6 Apr 2023 14:38:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56510 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240240AbjDFSi5 (ORCPT ); Thu, 6 Apr 2023 14:38:57 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5175E6196 for ; Thu, 6 Apr 2023 11:38:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1680806290; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=cL0xEv36os7K6igc2mQAflPTjWsCcGWjiQ4JpavLjnU=; b=Cr8tLDK55u7GUqpdvXiBhkvjbDO5OMjA5SMh3GQmkiH1pvjQ9WCa6xg0edmV6AeFgjDZXU Kbp2bC55KQ9Qd7QSUhasUlCVFCe2VCFmOEIhAQ+6b9umkctQo9OzqjYzCrUEbi07yrMkSM kc2irYiN8DCIWYvXs68yqoCBJ90Hpfc= Received: from mail-ed1-f72.google.com (mail-ed1-f72.google.com [209.85.208.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-138-twGbFGnfO6SFok46D-XpEg-1; Thu, 06 Apr 2023 14:38:08 -0400 X-MC-Unique: twGbFGnfO6SFok46D-XpEg-1 Received: by mail-ed1-f72.google.com with SMTP id 4fb4d7f45d1cf-5024da16ac2so761662a12.1 for ; Thu, 06 Apr 2023 11:38:08 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680806287; h=mime-version:message-id:date:references:in-reply-to:subject:cc:to :from:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=cL0xEv36os7K6igc2mQAflPTjWsCcGWjiQ4JpavLjnU=; b=F/VhbMjSxnz0aI947AJhqPDQWAs05ug/QAKkjaiIpAmnB9lNXwenv5osCt4BTZcGKv oY/YuUQmFQ4xie1Q7IkrmeWMFV8myMj9AGc0lrf+ki5Bqrdy1mpKOZJTP3cHVMZICFSw inPsNdNL6iw2I+Qaop/H96sWHMU49JImKH+6eZkAQu5UPzE2bOF2fT39EfFo6B5bMsKe TYZcDCcWkDDDjhQnRwCUJ6e2kvqQjXGYkiaXptfCUAtyGREiRQHORwGUvbLZ9LO0nOgr DzrPtBqAxe08tQkL5+C1egLfWHB5bKUW5yCfe38rMAMU5bjgGNQ6VPZSUBijtvq/xzHU an8w== X-Gm-Message-State: AAQBX9fGRxmS6rfmCOixmlC28sqiwSp4t6poMbXbltNkhqEZC81mN3XX 2q/nTmEzROztVu9APZqveNI1+fBb0v9msMQIXvewKrf0HbkcVFLa9isYwskuyY+H0UBR8M/F3uu KE62rE29M5Rws0wSL X-Received: by 2002:a05:6402:70e:b0:4fc:535c:3aa1 with SMTP id w14-20020a056402070e00b004fc535c3aa1mr475743edx.10.1680806287233; Thu, 06 Apr 2023 11:38:07 -0700 (PDT) X-Google-Smtp-Source: AKy350bn8KXU73iNBODtP7YbUGAxE1utUCnkQ8ktBabX2iMDmsXj0FzDJn95e86pszBxnyLCKIdpYQ== X-Received: by 2002:a05:6402:70e:b0:4fc:535c:3aa1 with SMTP id w14-20020a056402070e00b004fc535c3aa1mr475715edx.10.1680806286873; Thu, 06 Apr 2023 11:38:06 -0700 (PDT) Received: from alrua-x1.borgediget.toke.dk ([45.145.92.2]) by smtp.gmail.com with ESMTPSA id x102-20020a50baef000000b004af73333d6esm1047561ede.53.2023.04.06.11.38.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Apr 2023 11:38:06 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id 3FD93A746CA; Thu, 6 Apr 2023 20:38:05 +0200 (CEST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: Kal Conley , =?utf-8?B?QmrDtnJuIFTDtnBlbA==?= , Magnus Karlsson , Maciej Fijalkowski , Jonathan Lemon , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jonathan Corbet , Alexei Starovoitov , Daniel Borkmann , Jesper Dangaard Brouer , John Fastabend Cc: Kal Conley , netdev@vger.kernel.org, bpf@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH bpf-next v3 1/3] xsk: Support UMEM chunk_size > PAGE_SIZE In-Reply-To: <20230406130205.49996-2-kal.conley@dectris.com> References: <20230406130205.49996-1-kal.conley@dectris.com> <20230406130205.49996-2-kal.conley@dectris.com> X-Clacks-Overhead: GNU Terry Pratchett Date: Thu, 06 Apr 2023 20:38:05 +0200 Message-ID: <87sfdckgaa.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Kal Conley writes: > Add core AF_XDP support for chunk sizes larger than PAGE_SIZE. This > enables sending/receiving jumbo ethernet frames up to the theoretical > maxiumum of 64 KiB. For chunk sizes > PAGE_SIZE, the UMEM is required > to consist of HugeTLB VMAs (and be hugepage aligned). Initially, only > SKB mode is usable pending future driver work. Hmm, interesting. So how does this interact with XDP multibuf? -Toke