From owner-freebsd-usb@FreeBSD.ORG Mon Oct 6 11:06:59 2014 Return-Path: Delivered-To: freebsd-usb@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 608CA2FD for ; Mon, 6 Oct 2014 11:06:59 +0000 (UTC) Received: from onlyone.friendlyhosting.spb.ru (onlyone.friendlyhosting.spb.ru [IPv6:2a01:4f8:131:60a2::2]) by mx1.freebsd.org (Postfix) with ESMTP id 25FC893C for ; Mon, 6 Oct 2014 11:06:59 +0000 (UTC) Received: from [127.0.0.1] (nat.in.devexperts.com [89.113.128.63]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.friendlyhosting.spb.ru (Postfix) with ESMTPSA id 9605156403; Mon, 6 Oct 2014 15:06:57 +0400 (MSK) Message-ID: <543277CF.9050407@FreeBSD.org> Date: Mon, 06 Oct 2014 15:06:55 +0400 From: Lev Serebryakov Reply-To: lev@FreeBSD.org Organization: FreeBSD User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: Hans Petter Selasky , freebsd-usb@freebsd.org Subject: Re: Is here maximum size of buffer for libusb_fill_bulk_transfer() call? References: <543274CE.5080308@FreeBSD.org> <543276EF.5080809@selasky.org> In-Reply-To: <543276EF.5080809@selasky.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 06 Oct 2014 11:06:59 -0000 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 06.10.2014 15:03, Hans Petter Selasky wrote: >> Is here practical buffer size limit? I mean, maybe, standard >> limits transfer size by 64K or something like this? > > If the transfer is too big, libusb in FreeBSD loops using an > internal buffer, unlike Linux. You should be able to setup any > positive length which fits into an integer of type "int" or > "uint32_t". My question is more about cross-platform behavior, as I try to write cross-platform project. - -- // Lev Serebryakov -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (MingW32) iQJ8BAEBCgBmBQJUMnfPXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRGOTZEMUNBMEI1RjQzMThCNjc0QjMzMEFF QUIwM0M1OEJGREM0NzhGAAoJEOqwPFi/3EePh5sP/0ZlPkcJ5W00Y0cr5iuDtMTd bL5YkFOVFgJWobCqXxKE1xlZKfWNPgcQxovHhdNEjsADXXVj7ez56uSLMIfP+sKt LR/n3fSd9gbi3b6Lr54n2RI/wwLNkIOi43M5yx+Im4bCTdGpeYcfpMpZ7eie/Whw o8t5sH3ULXUnMRSOIi/F/6H382EmLUNSV9qbXTq0nq9bIJaMewV5EJISgODx+2nt BFaAB803t0otr5Uwwe5/BEknb9wu1X4A3HFwV1r+5ofz3JwDRiNZqAXj8XT8EIv3 0rMCn/VvFfqpIpBSlQwowgiuqj/5fJFOZ18g0Q3yVy+6XWVSPOUMBBTvjcODZMyN S1MPonvbZBPOWvTUqeFqpFxdj6CQ+hdi1uwPrqr9SLYrNLKUSjnbmt89ysJUYWeH KVENtGiES3Uf5TPdN20C8Ok+yo1LUNiE9y0BFRkAYWez9XfGFMuOecHhmYY3Uju4 /L2FNtpWHjDfXWIwlUTWT4+d5saEmKE0seHORd6HjD5bdOfmAXDrNexJ4LBgltyZ 0oMfmHOfDMnehXaFxGW1iYxsrJx29CvWfXHT8U3QK/psuJ/aEuJxf+i/PgrIY45v ZoywMLkM/pLAuRAUIwLWALtANDBlczJGWqTyYHs2GspVPmDKo68FmIzRVDKf0idq k/V9+jqWPCDT8k76xwma =xP8f -----END PGP SIGNATURE-----