From owner-freebsd-wireless@FreeBSD.ORG Mon Jun 3 02:43:22 2013 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 63AFA424 for ; Mon, 3 Jun 2013 02:43:22 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-qa0-x22c.google.com (mail-qa0-x22c.google.com [IPv6:2607:f8b0:400d:c00::22c]) by mx1.freebsd.org (Postfix) with ESMTP id 2E50711B3 for ; Mon, 3 Jun 2013 02:43:22 +0000 (UTC) Received: by mail-qa0-f44.google.com with SMTP id hu16so1549704qab.3 for ; Sun, 02 Jun 2013 19:43:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=8a+YAPigdvQEpCL30iIkrbuE2loDkhTkVi7jEIx9FN8=; b=b5/GORfkNufl1ygy628e3GKDxepEz1N2qkkqvWuEXwOqLFVYhBVH1JW+tU1KGbQGCM rHjHI9SIFLPZbRiwvRbJqazkt6PNkAWnuiVAiccHglfpnfj1DoTdbQMS/euaAUErbp4c P5Qxi9gfMWjdbpQiiAtMdWRCm0iO1hEi15zdgtmaksxnZoBG2yqboOTNRFDX/7thwlwC /nBo8ozXZ/ngf55wlFoavsQSJKI8CJ8XBzdT++j6Yt0/bXB8MIfFVhPnnUhFxZm/OHhq GhB1Ter6mbg3W4jgW9y5/L1KDpcrtc/E7tXvUCtxFATRSNJewhFzgo4EWTZ9Uzd+Pr3G pvmQ== MIME-Version: 1.0 X-Received: by 10.229.172.138 with SMTP id l10mr174823qcz.25.1370227401748; Sun, 02 Jun 2013 19:43:21 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.224.71.12 with HTTP; Sun, 2 Jun 2013 19:43:21 -0700 (PDT) Date: Sun, 2 Jun 2013 19:43:21 -0700 X-Google-Sender-Auth: trEoTBQ1PQk0ObIBJGKkiF9LRlQ Message-ID: Subject: playing with 802.11p / DMCA-86P2 From: Adrian Chadd To: freebsd-wireless@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 03 Jun 2013 02:43:22 -0000 So Unex gave me a couple of their 802.11p NICs to play with. http://www.unex.com.tw/product/dcma-86p2 It's a NIC specifically designed for the 5.9GHz band for 802.11p deployments. Now, the NIC probes and detects fine under FreeBSD. The main issue is the lack of regulatory information for said NIC. It's calibrated for 5.8-5.9GHz; it likely will work on other 5GHz channels but: * there's lots of filtering on the front end of this thing, so it's highly attenuated outside of the 11p frequencies; * the power calibration curves for transmit power control are _only_ for 5.8/5.9GHz. So to bring this up: * I have to add a new SKU for this particular NIC, as it comes up as regdomain/SKU 0x0 (ie, they didn't bother programming in one. Grr.) * I have to add a new regulatory domain entry for it, specifically to allow 5.8/5.9GHz operation. * We have to figure out which regulatory domains these cards are actually ok to use, and what the maximum transmit power is for each. But if people want to tinker with 802.11p and have the relevant licencing to do so, they will mostly work out of the box. adrian