From owner-freebsd-hackers@freebsd.org Mon Mar 11 13:42:10 2019 Return-Path: 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 A3D7315438E5 for ; Mon, 11 Mar 2019 13:42:10 +0000 (UTC) (envelope-from hps@selasky.org) Received: from mail.turbocat.net (turbocat.net [88.99.82.50]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id BB19096822 for ; Mon, 11 Mar 2019 13:42:09 +0000 (UTC) (envelope-from hps@selasky.org) Received: from hps2016.home.selasky.org (unknown [176.74.212.121]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.turbocat.net (Postfix) with ESMTPSA id 44E8E260297; Mon, 11 Mar 2019 14:42:07 +0100 (CET) Subject: Re: USB stack getting confused To: "O'Connor, Daniel" Cc: Konstantin Belousov , FreeBSD Hackers References: <3B29D870-41F9-46AF-B9F3-03106DEC417D@dons.net.au> <20190309152613.GM2492@kib.kiev.ua> <20190309162640.GN2492@kib.kiev.ua> <20190309192330.GO2492@kib.kiev.ua> <20190310094758.GP2492@kib.kiev.ua> <35f69493-4bbb-4142-b61a-3e90adc8777b@selasky.org> <20190310102629.GQ2492@kib.kiev.ua> <40bf77e0-47a5-6edc-b5d0-58e3c44988ac@selasky.org> <030A0C16-4508-4C7C-A87C-72B69B15EDF5@dons.net.au> <1BBD445B-9A27-4BE7-9B60-04BE0814D7CA@dons.net.au> <1692bbc5-02f4-d0e9-a290-219f045ff55b@selasky.org> <205EC4C0-810B-47C3-A21E-A1EE0A6E3824@dons.net.au> From: Hans Petter Selasky Message-ID: <991d10df-b42d-b557-1b47-37db5bfb4d42@selasky.org> Date: Mon, 11 Mar 2019 14:41:42 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <205EC4C0-810B-47C3-A21E-A1EE0A6E3824@dons.net.au> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: BB19096822 X-Spamd-Bar: ------ Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of hps@selasky.org designates 88.99.82.50 as permitted sender) smtp.mailfrom=hps@selasky.org X-Spamd-Result: default: False [-6.53 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; RCVD_TLS_ALL(0.00)[]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+a:mail.turbocat.net]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[selasky.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; MX_GOOD(-0.01)[cached: mail.turbocat.net]; NEURAL_HAM_SHORT(-0.96)[-0.963,0]; IP_SCORE(-3.26)[ip: (-9.48), ipnet: 88.99.0.0/16(-4.67), asn: 24940(-2.13), country: DE(-0.01)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:88.99.0.0/16, country:DE]; FREEMAIL_CC(0.00)[gmail.com]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 11 Mar 2019 13:42:11 -0000 On 3/11/19 1:36 PM, O'Connor, Daniel wrote: > > >> On 11 Mar 2019, at 18:57, Hans Petter Selasky wrote: >> >> On 3/11/19 7:27 AM, O'Connor, Daniel wrote: >>> I just realised I can check procstat for open file, derp. >>> [maarsytest 6:26] ~> procstat -f 2324|grep 0.5.0| wc >>> 64 640 4928 >>> So I guess that is why it is giving ENOMEM, I'm leaking FDs! >> >> That looks like a bug in your application?? > > Yes, I think it is. > I thought it was something else because usbconfig didn't see the device. > >> Which USB API are you using? > > The libusb10 interface - I didn't write the code (the vendor supplied a Linux version that was trivially compilable on FreeBSD). > > I have the source code and I can see what the issue is so I'll fix that, although I am surprised the limit for USB devices is so much lower than the system limit for file descriptors generally. > Hi, USB has a limit on open FD's per USB device, (USB_FIFO_MAX = 128) / 2 = 64. --HPS