From owner-freebsd-hackers@freebsd.org  Mon Sep  3 14:42:47 2018
Return-Path: <owner-freebsd-hackers@freebsd.org>
Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id A4C69FEBFF3
 for <freebsd-hackers@mailman.ysv.freebsd.org>;
 Mon,  3 Sep 2018 14:42:47 +0000 (UTC)
 (envelope-from aravindhank1994@gmail.com)
Received: from mail-yb1-xb36.google.com (mail-yb1-xb36.google.com
 [IPv6:2607:f8b0:4864:20::b36])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G3" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 3200688084
 for <freebsd-hackers@freebsd.org>; Mon,  3 Sep 2018 14:42:47 +0000 (UTC)
 (envelope-from aravindhank1994@gmail.com)
Received: by mail-yb1-xb36.google.com with SMTP id u33-v6so249542ybi.8
 for <freebsd-hackers@freebsd.org>; Mon, 03 Sep 2018 07:42:47 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025;
 h=mime-version:from:date:message-id:subject:to;
 bh=aGKSsBajM+kgJyy75yYIqSa4oh/wQcZzOatZN68NNRo=;
 b=ovKFXSx6h8ZdYVOaF/h/iYKCe4yq8J3LBaTAWlE2rB96SSKxStZCsTztcuG2gSXqpN
 1/NYux8VMAKsPvNmS8z12S6Rn3FRF5CKFBeSDuLpOBdzeObUXj0zNxpPnCQADP72dymI
 +h4kZ1xWIRQgPJDv9Yjw4a3Ag1V0wdm2iHZlulxJCw0m9ap+ZHe4zUttquQ0nkcbf8M5
 e0K9RGQUoTvBu/Nx2oHXbNpzFEGkkA5p+fsQDffkr+i878jf62Ld9cSnePAQ7+OETohv
 oV8G9ynl6yFSftcCs90FXYPlW+xAj3DF3pOJepRT7tFhKxHyI745sVBwbSAz66qpAe5P
 GcXw==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
 bh=aGKSsBajM+kgJyy75yYIqSa4oh/wQcZzOatZN68NNRo=;
 b=Vd2evZxRLN84eoEx40SWy5W+g1kuAj12GdZNzbPXONNutI/N9e5SZlkiBADtHKi6Gd
 lCDMuNMcSeWP4hSaJFaEDS6ly4VkzSZF7aeXLB+YyxrUh5buBR3xbWlESLaBV1ob1Vt9
 F6G7uiHUWeSQeDpT2ZT5130YD2kOGVfkzcxgb+WW8NGy2DS/xLmMBy9Sw27yMHGVllsA
 Y3R0yHI6o2HUzkwkfUngBxQio3sB79/XvVN+213u54zEetHyi6ZuGTnjaVgnW8r3dKD4
 KyAhJq+rsWlu/zXYEasDvlpZvcL8ahm/1r05S7yfQBMuwUvr1WSCEnVG/VQl67JABtEl
 8G6Q==
X-Gm-Message-State: APzg51CGSdyFjE/CxP6HUe5ZjmkQB50j0lYwvAQhwswofsumgNOtF0uw
 xZevTa173gFX51gdO8CPqlrB9L/ztxaETv/7HCV7pn+j
X-Google-Smtp-Source: ANB0VdY2r+rhrkpmL4F+db04uN0EH7kGqI/AOaVN3l4K7bvMXC3X1vJ+m3R5l7GGmu1dx3QjrayW2PAwIddbYt2Y2pc=
X-Received: by 2002:a25:fc0f:: with SMTP id
 v15-v6mr5547783ybd.211.1535985766269; 
 Mon, 03 Sep 2018 07:42:46 -0700 (PDT)
MIME-Version: 1.0
From: Aravindhan K <aravindhank1994@gmail.com>
Date: Mon, 3 Sep 2018 20:12:35 +0530
Message-ID: <CAJn1S2Nf7paq_MSdk1QrnUQ0pOga+r_r17eE_TxMqLPbSirggA@mail.gmail.com>
Subject: Help needed in Kernel Crypto Example
To: freebsd-hackers@freebsd.org
Content-Type: text/plain; charset="UTF-8"
X-Content-Filtered-By: Mailman/MimeDel 2.1.27
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.27
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 03 Sep 2018 14:42:47 -0000

Hi,

I am working on  implementation of SegmentRouting IPv6 for learning
purposes.
I were stuck on implementing HMAC-TLV. I was not able to find simple
example using crypto framework.
Here is my attempt to utilize crypto(9),
https://pastebin.com/dPYKT0tx
where crp->crp_olen returns 0.

Kindly help me to resolve the problem

Thanks & Regards,
Aravindhan K