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usb-redir: Split usb_handle_interrupt_data into separate in/out functions 

No functional changes.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Hans de Goede 2012-11-17 12:26:56 +01:00 committed by Gerd Hoffmann
parent c4020746ff
commit 234e810cce
1 changed files with 77 additions and 71 deletions
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148
hw/usb/redirect.c
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@ -610,80 +610,82 @@ static void usbredir_handle_bulk_data(USBRedirDevice *dev, USBPacket *p,
p->status = USB_RET_ASYNC;
}
static void usbredir_handle_interrupt_data(USBRedirDevice *dev,
USBPacket *p, uint8_t ep)
static void usbredir_handle_interrupt_in_data(USBRedirDevice *dev,
USBPacket *p, uint8_t ep)
{
if (ep & USB_DIR_IN) {
/* Input interrupt endpoint, buffered packet input */
struct buf_packet *intp;
int status, len;
/* Input interrupt endpoint, buffered packet input */
struct buf_packet *intp;
int status, len;
if (!dev->endpoint[EP2I(ep)].interrupt_started &&
!dev->endpoint[EP2I(ep)].interrupt_error) {
struct usb_redir_start_interrupt_receiving_header start_int = {
.endpoint = ep,
};
/* No id, we look at the ep when receiving a status back */
usbredirparser_send_start_interrupt_receiving(dev->parser, 0,
&start_int);
usbredirparser_do_write(dev->parser);
DPRINTF("interrupt recv started ep %02X\n", ep);
dev->endpoint[EP2I(ep)].interrupt_started = 1;
/* We don't really want to drop interrupt packets ever, but
having some upper limit to how much we buffer is good. */
dev->endpoint[EP2I(ep)].bufpq_target_size = 1000;
dev->endpoint[EP2I(ep)].bufpq_dropping_packets = 0;
}
intp = QTAILQ_FIRST(&dev->endpoint[EP2I(ep)].bufpq);
if (intp == NULL) {
DPRINTF2("interrupt-token-in ep %02X, no intp\n", ep);
/* Check interrupt_error for stream errors */
status = dev->endpoint[EP2I(ep)].interrupt_error;
dev->endpoint[EP2I(ep)].interrupt_error = 0;
if (status) {
usbredir_handle_status(dev, p, status);
} else {
p->status = USB_RET_NAK;
}
return;
}
DPRINTF("interrupt-token-in ep %02X status %d len %d\n", ep,
intp->status, intp->len);
status = intp->status;
len = intp->len;
if (len > p->iov.size) {
ERROR("received int data is larger then packet ep %02X\n", ep);
len = p->iov.size;
status = usb_redir_babble;
}
usb_packet_copy(p, intp->data, len);
bufp_free(dev, intp, ep);
usbredir_handle_status(dev, p, status);
} else {
/* Output interrupt endpoint, normal async operation */
struct usb_redir_interrupt_packet_header interrupt_packet;
uint8_t buf[p->iov.size];
DPRINTF("interrupt-out ep %02X len %zd id %"PRIu64"\n", ep,
p->iov.size, p->id);
if (usbredir_already_in_flight(dev, p->id)) {
p->status = USB_RET_ASYNC;
return;
}
interrupt_packet.endpoint = ep;
interrupt_packet.length = p->iov.size;
usb_packet_copy(p, buf, p->iov.size);
usbredir_log_data(dev, "interrupt data out:", buf, p->iov.size);
usbredirparser_send_interrupt_packet(dev->parser, p->id,
&interrupt_packet, buf, p->iov.size);
if (!dev->endpoint[EP2I(ep)].interrupt_started &&
!dev->endpoint[EP2I(ep)].interrupt_error) {
struct usb_redir_start_interrupt_receiving_header start_int = {
.endpoint = ep,
};
/* No id, we look at the ep when receiving a status back */
usbredirparser_send_start_interrupt_receiving(dev->parser, 0,
&start_int);
usbredirparser_do_write(dev->parser);
p->status = USB_RET_ASYNC;
DPRINTF("interrupt recv started ep %02X\n", ep);
dev->endpoint[EP2I(ep)].interrupt_started = 1;
/* We don't really want to drop interrupt packets ever, but
having some upper limit to how much we buffer is good. */
dev->endpoint[EP2I(ep)].bufpq_target_size = 1000;
dev->endpoint[EP2I(ep)].bufpq_dropping_packets = 0;
}
intp = QTAILQ_FIRST(&dev->endpoint[EP2I(ep)].bufpq);
if (intp == NULL) {
DPRINTF2("interrupt-token-in ep %02X, no intp\n", ep);
/* Check interrupt_error for stream errors */
status = dev->endpoint[EP2I(ep)].interrupt_error;
dev->endpoint[EP2I(ep)].interrupt_error = 0;
if (status) {
usbredir_handle_status(dev, p, status);
} else {
p->status = USB_RET_NAK;
}
return;
}
DPRINTF("interrupt-token-in ep %02X status %d len %d\n", ep,
intp->status, intp->len);
status = intp->status;
len = intp->len;
if (len > p->iov.size) {
ERROR("received int data is larger then packet ep %02X\n", ep);
len = p->iov.size;
status = usb_redir_babble;
}
usb_packet_copy(p, intp->data, len);
bufp_free(dev, intp, ep);
usbredir_handle_status(dev, p, status);
}
static void usbredir_handle_interrupt_out_data(USBRedirDevice *dev,
USBPacket *p, uint8_t ep)
{
/* Output interrupt endpoint, normal async operation */
struct usb_redir_interrupt_packet_header interrupt_packet;
uint8_t buf[p->iov.size];
DPRINTF("interrupt-out ep %02X len %zd id %"PRIu64"\n", ep,
p->iov.size, p->id);
if (usbredir_already_in_flight(dev, p->id)) {
p->status = USB_RET_ASYNC;
return;
}
interrupt_packet.endpoint = ep;
interrupt_packet.length = p->iov.size;
usb_packet_copy(p, buf, p->iov.size);
usbredir_log_data(dev, "interrupt data out:", buf, p->iov.size);
usbredirparser_send_interrupt_packet(dev->parser, p->id,
&interrupt_packet, buf, p->iov.size);
usbredirparser_do_write(dev->parser);
p->status = USB_RET_ASYNC;
}
static void usbredir_stop_interrupt_receiving(USBRedirDevice *dev,
@ -729,7 +731,11 @@ static void usbredir_handle_data(USBDevice *udev, USBPacket *p)
usbredir_handle_bulk_data(dev, p, ep);
break;
case USB_ENDPOINT_XFER_INT:
usbredir_handle_interrupt_data(dev, p, ep);
if (ep & USB_DIR_IN) {
usbredir_handle_interrupt_in_data(dev, p, ep);
} else {
usbredir_handle_interrupt_out_data(dev, p, ep);
}
break;
default:
ERROR("handle_data ep %02X has unknown type %d\n", ep,