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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5855C433EF for ; Fri, 15 Oct 2021 13:22:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C72CF60F25 for ; Fri, 15 Oct 2021 13:22:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239360AbhJONYn (ORCPT ); Fri, 15 Oct 2021 09:24:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:55715 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239351AbhJONYm (ORCPT ); Fri, 15 Oct 2021 09:24:42 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1634304155; 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=6i4ZlcpI65G0vVAJgnz1cFjngGSuB+RC98zfnoRpQag=; b=PvaldnlvWDq8CTi3qnZlr8sIyFUgJxR0s1G9zKffRfT0N3LO4kTt2YmrtiQbNlizB7d9fx L0yb1G0FBckH+OFWRsJR2C3zvqAPcBlT8uvviiG/9lE+d7rh81qpOa+66Yyf9P/ix+LmKl y5Urr5GfpNQs3RZgSyiGraPfa0h19Rw= Received: from mail-ed1-f69.google.com (mail-ed1-f69.google.com [209.85.208.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-451-enE4xlzkOZ2K2SeP-A-i5A-1; Fri, 15 Oct 2021 09:22:34 -0400 X-MC-Unique: enE4xlzkOZ2K2SeP-A-i5A-1 Received: by mail-ed1-f69.google.com with SMTP id c30-20020a50f61e000000b003daf3955d5aso8225977edn.4 for ; Fri, 15 Oct 2021 06:22:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=6i4ZlcpI65G0vVAJgnz1cFjngGSuB+RC98zfnoRpQag=; b=hSh9KJkUBFVx4++oLnzYjEvJza0qup7i/J7Po5/usJ/TP+2ozgy0RBdV21a2KbslRQ 27+yX2aNd1MXAdMMy7CjDtq1uJ8rL1ZPKSzjrLZzQYhMEyUhda2yaqx8HsQBV6wRPxN3 oD7GTMkxZgHe52u7oix/WNlekITRLyhXmwtVKcrydtJA7MfEfx8+ZVf0g/TlyeKCwdDp l6bmPXV5ciSCt40DZN775qV49RE69nl7biKLCXn2qdTqXkn4N4eeWRw5EhJry5x0xoDH 6QMzZAn6gPpJk1VInZyGYU8NgbXB9y32bVWkSjyr2SQCN/TSybQefAO/bKMSJn2jgIS1 1PhA== X-Gm-Message-State: AOAM532vA2dQgTjr1WlayEk/TZlkLPUo+0YR1Btn2uyoxZF++iZ53f6H ICY9NFFNeZPDQJluflxzbkBJzd6XoHUgI3AIvzmNAE4F/m2dlnybQaiZvwTXFRI+69SD4LT2p4P yFZdKdpJTwFNc X-Received: by 2002:a17:906:a158:: with SMTP id bu24mr6440726ejb.356.1634304152649; Fri, 15 Oct 2021 06:22:32 -0700 (PDT) X-Google-Smtp-Source: ABdhPJwf7iElNP6x1ZTn76DCAvYzuu9ypXwRBvtux0Y3zYiqJL2i3G/wNYIAuJgTIg0LlcEnuT3W1g== X-Received: by 2002:a17:906:a158:: with SMTP id bu24mr6440696ejb.356.1634304152394; Fri, 15 Oct 2021 06:22:32 -0700 (PDT) Received: from alrua-x1.borgediget.toke.dk ([45.145.92.2]) by smtp.gmail.com with ESMTPSA id ck9sm4210345ejb.56.2021.10.15.06.22.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Oct 2021 06:22:31 -0700 (PDT) Received: by alrua-x1.borgediget.toke.dk (Postfix, from userid 1000) id 5A5E518025F; Fri, 15 Oct 2021 15:22:31 +0200 (CEST) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= To: Lorenzo Bianconi , bpf@vger.kernel.org, netdev@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, davem@davemloft.net, kuba@kernel.org, ast@kernel.org, daniel@iogearbox.net, shayagr@amazon.com, john.fastabend@gmail.com, dsahern@kernel.org, brouer@redhat.com, echaudro@redhat.com, jasowang@redhat.com, alexander.duyck@gmail.com, saeed@kernel.org, maciej.fijalkowski@intel.com, magnus.karlsson@intel.com, tirthendu.sarkar@intel.com Subject: Re: [PATCH v16 bpf-next 09/20] bpf: introduce BPF_F_XDP_MB flag in prog_flags loading the ebpf program In-Reply-To: <0a48666cfb23d1ceef8d529506e7ad2da90079de.1634301224.git.lorenzo@kernel.org> References: <0a48666cfb23d1ceef8d529506e7ad2da90079de.1634301224.git.lorenzo@kernel.org> X-Clacks-Overhead: GNU Terry Pratchett Date: Fri, 15 Oct 2021 15:22:31 +0200 Message-ID: <87y26uzalk.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Lorenzo Bianconi writes: > Introduce BPF_F_XDP_MB and the related field in bpf_prog_aux in order to > notify the driver the loaded program support xdp multi-buffer. We should also add some restrictions in the BPF core. In particular, tail call, cpumap and devmap maps should not be able to mix multi-buf and non-multibuf programs. -Toke