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[54.197.127.237]) by mx.google.com with ESMTP id e17si6030173qki.137.2017.12.21.15.09.22; Thu, 21 Dec 2017 15:09:22 -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 A20A261515; Thu, 21 Dec 2017 23:09:22 +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=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE, 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 52449616F9; Thu, 21 Dec 2017 23:02:57 +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 E9464616ED; Thu, 21 Dec 2017 23:02:50 +0000 (UTC) Received: from forward100j.mail.yandex.net (forward100j.mail.yandex.net [5.45.198.240]) by lists.linaro.org (Postfix) with ESMTPS id 8C40E61523 for ; Thu, 21 Dec 2017 23:00:42 +0000 (UTC) Received: from mxback2o.mail.yandex.net (mxback2o.mail.yandex.net [IPv6:2a02:6b8:0:1a2d::1c]) by forward100j.mail.yandex.net (Yandex) with ESMTP id 8B9515D820A5 for ; Fri, 22 Dec 2017 02:00:41 +0300 (MSK) Received: from smtp3p.mail.yandex.net (smtp3p.mail.yandex.net [2a02:6b8:0:1472:2741:0:8b6:8]) by mxback2o.mail.yandex.net (nwsmtp/Yandex) with ESMTP id NJHDMjKvT6-0fNa2XfL; Fri, 22 Dec 2017 02:00:41 +0300 Received: by smtp3p.mail.yandex.net (nwsmtp/Yandex) with ESMTPSA id eIQBj3oT7q-0fme8FNS; Fri, 22 Dec 2017 02:00:41 +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: Fri, 22 Dec 2017 02:00:39 +0300 Message-Id: <1513897240-21266-2-git-send-email-odpbot@yandex.ru> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1513897240-21266-1-git-send-email-odpbot@yandex.ru> References: <1513897240-21266-1-git-send-email-odpbot@yandex.ru> Github-pr-num: 329 Subject: [lng-odp] [PATCH API-NEXT v3 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: 177eeff39e19289e771119cfdffc515cb16f9db5 ** Merge commit sha: b3c4632b8d6f0fb1635f4ec9eedd9862b727f5a5 **/ 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 4c3c498cd..a6a622f13 100644 --- a/include/odp/api/spec/ipsec.h +++ b/include/odp/api/spec/ipsec.h @@ -238,6 +238,10 @@ typedef struct odp_ipsec_capability_t { */ odp_support_t retain_header; + /** Implementation will automatically truncate TFC padding in received + * packets */ + odp_bool_t 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. @@ -1206,6 +1210,12 @@ 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): @@ -1271,6 +1281,11 @@ 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 *