From patchwork Thu Mar 10 05:46:53 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Dumazet X-Patchwork-Id: 12775934 X-Patchwork-Delegate: kuba@kernel.org 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 CCF5FC433FE for ; Thu, 10 Mar 2022 05:47:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239647AbiCJFsY (ORCPT ); Thu, 10 Mar 2022 00:48:24 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50956 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238058AbiCJFsQ (ORCPT ); Thu, 10 Mar 2022 00:48:16 -0500 Received: from mail-pf1-x42c.google.com (mail-pf1-x42c.google.com [IPv6:2607:f8b0:4864:20::42c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 711C8F957C for ; Wed, 9 Mar 2022 21:47:16 -0800 (PST) Received: by mail-pf1-x42c.google.com with SMTP id g19so4206119pfc.9 for ; Wed, 09 Mar 2022 21:47:16 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=zmMmAv7X/GTOQMp14Z492/H8MoM1ZZZ0aZt3DTBRw6M=; b=E9I5eo+3RT0CJNCXM9CAdllkH0tAi6tyLnbvxTs23YsV4DPhWjDMgCxZEK+42THR+l ZAM3wnw0NxTaZsn4sXXBIKwkVWMsv5mxArv8mWig004vQMHcGGQtQH8V+ejqYet0iUt+ 0ZvW0uJiQJrRjuutenQN4uu1ndkBk1ELOqb6B+NOuBLFRZJjY8m+fLZsI3CBgdJPbp08 7dJ0EipajhJstmlIHf4ZJ5uwxYMKMbQeD/VoZZFMio4chZPpCHjyKkaYm/e0hduFeGVj sQc90cdHI827uhvcNCqQsSAFUy95QuhQlRNEHSTxCHCYacbaXqD6U20sRjnE+WlXrZbf FPbg== 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:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=zmMmAv7X/GTOQMp14Z492/H8MoM1ZZZ0aZt3DTBRw6M=; b=K3/Je1BA9P3XhajRsPj6p/4PsxXSGNoUl2ph6HGvMsxi2aH3UtFNqg/c0e41Db6kxS fML6ilLkFhWr3FcjTYzJ6qmxr4qPuQex5jnByxQETJ38qXPPvBIhvFwLyXGDVVPhoaeP BEUPJWuzxEJl3VU+2Bfk5DQoSLvVXbtSkh1JYjZFRL0MGu7XliT9IQqI1pqo3l0qM1zt WH4N2gliTlpEUTI+qn8EUXfvqSizAyc0c9LFUymNz/+bsFkCdE7IbNST0RGeja7SORWc qHuWHunHXednRAEu9ee8V6jVxSsfyICv65fN1CBVWGKHbm/KkAX2ZvmUQZ02/KX89sSW iVBQ== X-Gm-Message-State: AOAM530KePZIAAh6X4zWL5OitqLmy2HeLcfMqcpjk103R/P3QJMwQTaa Rq2q29YnWktZFRP7l5tfPMQ= X-Google-Smtp-Source: ABdhPJwMWQbzt0m3NdWwmkiES1J/WrNeje5u6KGzd/X4PO/12aP+hlO4Pt2cJ7O2PSnE1uEo9HuFbQ== X-Received: by 2002:a63:82c3:0:b0:37c:7976:4dc2 with SMTP id w186-20020a6382c3000000b0037c79764dc2mr2738663pgd.477.1646891235958; Wed, 09 Mar 2022 21:47:15 -0800 (PST) Received: from edumazet1.svl.corp.google.com ([2620:15c:2c4:201:c6c7:6f77:9634:183c]) by smtp.gmail.com with ESMTPSA id 16-20020a056a00073000b004dfe2217090sm5270779pfm.200.2022.03.09.21.47.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Mar 2022 21:47:15 -0800 (PST) From: Eric Dumazet To: "David S . Miller" , Jakub Kicinski Cc: netdev , Alexander Duyck , Coco Li , Eric Dumazet , Eric Dumazet Subject: [PATCH v4 net-next 04/14] ipv6: add struct hop_jumbo_hdr definition Date: Wed, 9 Mar 2022 21:46:53 -0800 Message-Id: <20220310054703.849899-5-eric.dumazet@gmail.com> X-Mailer: git-send-email 2.35.1.616.g0bdcbb4464-goog In-Reply-To: <20220310054703.849899-1-eric.dumazet@gmail.com> References: <20220310054703.849899-1-eric.dumazet@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Eric Dumazet Following patches will need to add and remove local IPv6 jumbogram options to enable BIG TCP. Signed-off-by: Eric Dumazet --- include/net/ipv6.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 213612f1680c7c39f4c07f0c05b4e6cf34a7878e..63d019953c47ea03d3b723a58c25e83c249489a9 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -151,6 +151,17 @@ struct frag_hdr { __be32 identification; }; +/* + * Jumbo payload option, as described in RFC 2675 2. + */ +struct hop_jumbo_hdr { + u8 nexthdr; + u8 hdrlen; + u8 tlv_type; /* IPV6_TLV_JUMBO, 0xC2 */ + u8 tlv_len; /* 4 */ + __be32 jumbo_payload_len; +}; + #define IP6_MF 0x0001 #define IP6_OFFSET 0xFFF8