From patchwork Tue Jan 12 19:07:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eran Ben Elisha X-Patchwork-Id: 361653 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3DC16C433DB for ; Tue, 12 Jan 2021 19:08:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 05EAC23107 for ; Tue, 12 Jan 2021 19:08:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393007AbhALTIf (ORCPT ); Tue, 12 Jan 2021 14:08:35 -0500 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:18485 "EHLO hqnvemgate26.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2392985AbhALTIf (ORCPT ); Tue, 12 Jan 2021 14:08:35 -0500 Received: from hqmail.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, AES256-SHA) id ; Tue, 12 Jan 2021 11:07:54 -0800 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Jan 2021 19:07:42 +0000 Received: from vdi.nvidia.com (172.20.145.6) by mail.nvidia.com (172.20.187.12) with Microsoft SMTP Server id 15.0.1473.3 via Frontend Transport; Tue, 12 Jan 2021 19:07:38 +0000 From: Eran Ben Elisha To: "David S. Miller" , Jakub Kicinski CC: , Tariq Toukan , Cong Wang , Eric Dumazet , Jiri Pirko , Vladimir Oltean , Jakub Sitnicki , Guillaume Nault , Richard Cochran , Andrew Lunn , Alexei Starovoitov , Ariel Levkovich , Andrii Nakryiko , "Gustavo A. R. Silva" , "Eran Ben Elisha" Subject: [PATCH net-next v4 2/2] net: flow_dissector: Parse PTP L2 packet header Date: Tue, 12 Jan 2021 21:07:13 +0200 Message-ID: <1610478433-7606-3-git-send-email-eranbe@nvidia.com> X-Mailer: git-send-email 1.8.4.3 In-Reply-To: <1610478433-7606-1-git-send-email-eranbe@nvidia.com> References: <1610478433-7606-1-git-send-email-eranbe@nvidia.com> MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1610478474; bh=eRHyyBkqspmw6dXadEu8VlOfyhY7EbksYThGhIPKQqQ=; h=From:To:CC:Subject:Date:Message-ID:X-Mailer:In-Reply-To: References:MIME-Version:Content-Type; b=MRn1zcn0i/XnF07c3UtbgmpcC/4eSu8fmhtJ+3mX7ND7XKiWiWWyhBuoJmmaYE1H0 0naRnszSac4zA7GNDxvPOqhoDv1/34/PpA1zJ1rPrwvKBgJ0P3xIfTChiRfJXPHPU+ GDhvrbFRhY6boxHziwZW4xN1hsYIk/cyAdOrcwWUTXc4b4/dpEO/3Yxl4S8Ayap7Fq pKc0JT2KUjSHoaxaKQw+1ReAnl6YHR0oDKNaw9/MG4fhxN3jjqt2POBtNiRVSFpy0O RRURtvMp7BoP4s8WavoU/HRt62yZhgEWpX7jClQ+c5fJDP023XYioSaTanUa3YJ1c+ fYo7ZrViEexKw== Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Add support for parsing PTP L2 packet header. Such packet consists of an L2 header (with ethertype of ETH_P_1588), PTP header, body and an optional suffix. Signed-off-by: Eran Ben Elisha Reviewed-by: Tariq Toukan Acked-by: Richard Cochran --- net/core/flow_dissector.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 6f1adba6695f..2d70ded389ae 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include #include @@ -1251,6 +1252,21 @@ bool __skb_flow_dissect(const struct net *net, &proto, &nhoff, hlen, flags); break; + case htons(ETH_P_1588): { + struct ptp_header *hdr, _hdr; + + hdr = __skb_header_pointer(skb, nhoff, sizeof(_hdr), data, + hlen, &_hdr); + if (!hdr) { + fdret = FLOW_DISSECT_RET_OUT_BAD; + break; + } + + nhoff += ntohs(hdr->message_length); + fdret = FLOW_DISSECT_RET_OUT_GOOD; + break; + } + default: fdret = FLOW_DISSECT_RET_OUT_BAD; break;