From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([140.186.70.92]:51137) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RdgYv-00058b-Ln for qemu-devel@nongnu.org; Thu, 22 Dec 2011 06:11:50 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1RdgYr-0002mR-3y for qemu-devel@nongnu.org; Thu, 22 Dec 2011 06:11:49 -0500 Received: from mx1.redhat.com ([209.132.183.28]:47296) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1RdgYq-0002m6-Mj for qemu-devel@nongnu.org; Thu, 22 Dec 2011 06:11:44 -0500 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id pBMBBik4004974 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 22 Dec 2011 06:11:44 -0500 From: Hans de Goede Date: Thu, 22 Dec 2011 12:12:36 +0100 Message-Id: <1324552358-5234-3-git-send-email-hdegoede@redhat.com> In-Reply-To: <1324552358-5234-1-git-send-email-hdegoede@redhat.com> References: <1324552358-5234-1-git-send-email-hdegoede@redhat.com> Subject: [Qemu-devel] [PATCH 3/5] usb-redir: Pre-fill our isoc input buffer before sending pkts to the host List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Gerd Hoffmann Cc: Hans de Goede , qemu-devel@nongnu.org This is something which should have been done from the first version of usb-redir, but wasn't. Signed-off-by: Hans de Goede --- usb-redir.c | 16 ++++++++++++++++ 1 files changed, 16 insertions(+), 0 deletions(-) diff --git a/usb-redir.c b/usb-redir.c index 0a1157b..0658076 100644 --- a/usb-redir.c +++ b/usb-redir.c @@ -60,7 +60,9 @@ struct endp_data { uint8_t iso_error; /* For reporting iso errors to the HC */ uint8_t interrupt_started; uint8_t interrupt_error; + uint8_t bufpq_prefilled; QTAILQ_HEAD(, buf_packet) bufpq; + int bufpq_size; int bufpq_target_size; }; @@ -306,6 +308,7 @@ static struct buf_packet *bufp_alloc(USBRedirDevice *dev, bufp->len = len; bufp->status = status; QTAILQ_INSERT_TAIL(&dev->endpoint[EP2I(ep)].bufpq, bufp, next); + dev->endpoint[EP2I(ep)].bufpq_size++; return bufp; } @@ -313,6 +316,7 @@ static void bufp_free(USBRedirDevice *dev, struct buf_packet *bufp, uint8_t ep) { QTAILQ_REMOVE(&dev->endpoint[EP2I(ep)].bufpq, bufp, next); + dev->endpoint[EP2I(ep)].bufpq_size--; free(bufp->data); g_free(bufp); } @@ -383,14 +387,26 @@ static int usbredir_handle_iso_data(USBRedirDevice *dev, USBPacket *p, usbredirparser_do_write(dev->parser); DPRINTF("iso stream started ep %02X\n", ep); dev->endpoint[EP2I(ep)].iso_started = 1; + dev->endpoint[EP2I(ep)].bufpq_prefilled = 0; } if (ep & USB_DIR_IN) { struct buf_packet *isop; + if (dev->endpoint[EP2I(ep)].iso_started && + !dev->endpoint[EP2I(ep)].bufpq_prefilled) { + if (dev->endpoint[EP2I(ep)].bufpq_size < + dev->endpoint[EP2I(ep)].bufpq_target_size) { + return usbredir_handle_status(dev, 0, 0); + } + dev->endpoint[EP2I(ep)].bufpq_prefilled = 1; + } + isop = QTAILQ_FIRST(&dev->endpoint[EP2I(ep)].bufpq); if (isop == NULL) { DPRINTF2("iso-token-in ep %02X, no isop\n", ep); + /* Re-fill the buffer */ + dev->endpoint[EP2I(ep)].bufpq_prefilled = 0; /* Check iso_error for stream errors, otherwise its an underrun */ status = dev->endpoint[EP2I(ep)].iso_error; dev->endpoint[EP2I(ep)].iso_error = 0; -- 1.7.7.4