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[54.197.127.237]) by mx.google.com with ESMTP id g64si7489030qkc.206.2017.12.21.09.15.08; Thu, 21 Dec 2017 09:15:09 -0800 (PST) Received-SPF: pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) client-ip=54.197.127.237; Authentication-Results: mx.google.com; spf=pass (google.com: domain of lng-odp-bounces@lists.linaro.org designates 54.197.127.237 as permitted sender) smtp.mailfrom=lng-odp-bounces@lists.linaro.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=yandex.ru Received: by lists.linaro.org (Postfix, from userid 109) id C519E61523; Thu, 21 Dec 2017 17:15:08 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on ip-10-142-244-252 X-Spam-Level: X-Spam-Status: No, score=-2.6 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_LOW,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from [127.0.0.1] (localhost [127.0.0.1]) by lists.linaro.org (Postfix) with ESMTP id 48F6060A6E; Thu, 21 Dec 2017 17:03:53 +0000 (UTC) X-Original-To: lng-odp@lists.linaro.org Delivered-To: lng-odp@lists.linaro.org Received: by lists.linaro.org (Postfix, from userid 109) id 281E960960; Thu, 21 Dec 2017 17:03:38 +0000 (UTC) Received: from forward106j.mail.yandex.net (forward106j.mail.yandex.net [5.45.198.249]) by lists.linaro.org (Postfix) with ESMTPS id 219BE60C5E for ; Thu, 21 Dec 2017 17:01:04 +0000 (UTC) Received: from mxback11j.mail.yandex.net (mxback11j.mail.yandex.net [IPv6:2a02:6b8:0:1619::84]) by forward106j.mail.yandex.net (Yandex) with ESMTP id E4D2A180465C for ; Thu, 21 Dec 2017 20:01:02 +0300 (MSK) Received: from smtp1p.mail.yandex.net (smtp1p.mail.yandex.net [2a02:6b8:0:1472:2741:0:8b6:6]) by mxback11j.mail.yandex.net (nwsmtp/Yandex) with ESMTP id pIj5CO43gK-12O4A30A; Thu, 21 Dec 2017 20:01:02 +0300 Received: by smtp1p.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id 7SZIOcAQPz-12leto9T; Thu, 21 Dec 2017 20:01:02 +0300 (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (Client certificate not present) From: Github ODP bot To: lng-odp@lists.linaro.org Date: Thu, 21 Dec 2017 20:01:00 +0300 Message-Id: <1513875661-25412-2-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1513875661-25412-1-git-send-email-odpbot@yandex.ru> References: <1513875661-25412-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 329 Subject: [lng-odp] [PATCH API-NEXT v2 1/2] api: ipsec: document TFC padding usage X-BeenThere: lng-odp@lists.linaro.org X-Mailman-Version: 2.1.16 Precedence: list List-Id: "The OpenDataPlane \(ODP\) List" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: lng-odp-bounces@lists.linaro.org Sender: "lng-odp" From: Dmitry Eremin-Solenikov It is possible to include TFC padding into ESP-tunnel packets. Document usage of such padding according to RFC. Signed-off-by: Dmitry Eremin-Solenikov --- /** Email created from pull request 329 (lumag:ipsec-tfc) ** https://github.com/Linaro/odp/pull/329 ** Patch: https://github.com/Linaro/odp/pull/329.patch ** Base sha: c38fc105f0e9a88dd4ebb4d9e7ac9e1160466322 ** Merge commit sha: d554b8508bc74d27b4459a1d4cbb3cd84fc1f1eb **/ include/odp/api/spec/ipsec.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/odp/api/spec/ipsec.h b/include/odp/api/spec/ipsec.h index 538472a5e..3e11e09f1 100644 --- a/include/odp/api/spec/ipsec.h +++ b/include/odp/api/spec/ipsec.h @@ -259,6 +259,10 @@ typedef struct odp_ipsec_capability_t { */ odp_support_t retain_header; + /** Implementation will automatically truncate TFC padding in received + * packets */ + odp_bool tfc_padding_truncate; + /** Maximum number of different destination CoSes in classification * pipelining. The same CoS may be used for many SAs. This is equal or * less than 'max_cos' capability in classifier API. @@ -1209,6 +1213,12 @@ typedef struct odp_ipsec_status_t { * restored. The amount and content of packet data before the IP header is * undefined. * + * Additional TFC padding might be present after packet contents for ESP tunnel + * mode. Received side can use total (IPv4) or payload (IPv6) length from + * internal headers to drop such TFC padding. If @tfc_padding_truncate + * capability is set, implementation will truncate received packets + * automatically. Otherwise ODP application has to truncate packets manually. + * * Each successfully transformed packet has a valid value for these metadata * regardless of the inner packet parse configuration * (odp_ipsec_inbound_config_t): @@ -1274,6 +1284,11 @@ int odp_ipsec_in(const odp_packet_t pkt_in[], int num_in, * with IPSEC, etc headers constructed according to the standards. The amount * and content of packet data before the IP header is undefined. * + * Additional TFC padding might be present after packet payload for ESP-tunnel + * mode. It should be filled by application before submitting packet to ODP. + * Such padding will be included into encrypted packet. Receiver side will skip + * this padding. + * * Each successfully transformed packet has a valid value for these metadata: * - L3 offset: Offset to the first byte of the (outmost) IP header *