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 967E1C433FE for ; Sat, 11 Dec 2021 00:09:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244172AbhLKAMr (ORCPT ); Fri, 10 Dec 2021 19:12:47 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51596 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237677AbhLKAMq (ORCPT ); Fri, 10 Dec 2021 19:12:46 -0500 Received: from mail-ot1-x335.google.com (mail-ot1-x335.google.com [IPv6:2607:f8b0:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 18FEFC061714; Fri, 10 Dec 2021 16:09:11 -0800 (PST) Received: by mail-ot1-x335.google.com with SMTP id n17-20020a9d64d1000000b00579cf677301so11269949otl.8; Fri, 10 Dec 2021 16:09:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:message-id:in-reply-to:references:subject :mime-version:content-transfer-encoding; bh=AjuBUrbI07vSicWM7Jf3wVpvEq4PKtw2sqmTEx6HEpc=; b=aySVZBDnKt2IMf0iKJvfcKDePWUac4vo6TUNn6F1IeL2XX2y0cPrfmEJl/fVQqLrJU QOfBNCdvByYPnJ2Eof9oWvWhV2OzCim0hETU9ydzqYtzXrcXBvmxzK5carvPKBabQZ6F ETKQ5Z7b0PjNON0cwP/kthwiT9DGr6tPfB2Y+JLV1f1+jl6ZijPwpWxi6ykLKxnQ5Ol/ TC1IPTFOKxZNzzhjcvjCLzPmZD0rouF7YVBs9/w/Tfk9oefZVjcsiIVkR2mYTFqT0Jcb PCmD6ZbjlCXl9h7ghqqLwIkGp01QXxn9iRSxCp6clulv4n5TYfUe1H0gCObS/E2GUKxZ OuEA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:message-id:in-reply-to :references:subject:mime-version:content-transfer-encoding; bh=AjuBUrbI07vSicWM7Jf3wVpvEq4PKtw2sqmTEx6HEpc=; b=du6faER7607E2wjzptplC3YipmyUyJ5UrGod4FvC2eaVf5s824cYZ9if3CeLKVLwvN 0mQ90XKlxKwKsGm7smSMOGIQqQtnrj7t1nXaj3zWLfasupDSHgqqq1Hp0gLCuSzlK3I+ C+VyV0PhP/qaVXadiqOdchqlE3rMWosS2izCne57rPfbjW3rr8OffUeFNvC1skJqafTr rF6mPlP7zu7tHg9CbD3CFn2voEzpAO8/lTEu3HUK/lMEvQ8Kfx7NOKwpVZGPWDyWaOT3 FQb56RFN7rp+ib7gUaHS4Djp4EnOo4iDv1oSZZI/Gof/b9+spTeoFKg4v+UqgFodCZka aJGg== X-Gm-Message-State: AOAM532Ux3m6/fYaiOCgKIze0k0yB5cvxrX/kno0nAadNvoSVu9r4Vra xwZbGAELGgl3t/OuctEJm5w= X-Google-Smtp-Source: ABdhPJwkzaZ63+TBnIkAwTr89v4wOdwK6J+OKJeGZAnAvfp7dYMZi5sqZ/yBa3oZmsBY6s1RKmSePg== X-Received: by 2002:a05:6830:4d6:: with SMTP id s22mr13951906otd.270.1639181350460; Fri, 10 Dec 2021 16:09:10 -0800 (PST) Received: from localhost ([172.243.151.11]) by smtp.gmail.com with ESMTPSA id t5sm818107ool.10.2021.12.10.16.09.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Dec 2021 16:09:10 -0800 (PST) Date: Fri, 10 Dec 2021 16:09:02 -0800 From: John Fastabend 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, toke@redhat.com Message-ID: <61b3ec1e6868f_2c4032083e@john.notmuch> In-Reply-To: <8a7a7972107efa6e2ba8e603bd5f054c79de3431.1639162845.git.lorenzo@kernel.org> References: <8a7a7972107efa6e2ba8e603bd5f054c79de3431.1639162845.git.lorenzo@kernel.org> Subject: RE: [PATCH v20 bpf-next 03/23] net: mvneta: update mb bit before passing the xdp buffer to eBPF layer Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Lorenzo Bianconi wrote: > Update multi-buffer bit (mb) in xdp_buff to notify XDP/eBPF layer and > XDP remote drivers if this is a "non-linear" XDP buffer. Access > skb_shared_info only if xdp_buff mb is set in order to avoid possible > cache-misses. > > Signed-off-by: Lorenzo Bianconi > --- Acked-by: John Fastabend