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usb-core: Add a usb_ep_find_packet_by_id() helper function

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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 2012-08-28 09:43:18 +02:00 committed by Gerd Hoffmann
parent cc40997489
commit c13a9e6136
2 changed files with 17 additions and 0 deletions
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2
hw/usb.h
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@ -377,6 +377,8 @@ void usb_ep_set_max_packet_size(USBDevice *dev, int pid, int ep,
uint16_t raw);
int usb_ep_get_max_packet_size(USBDevice *dev, int pid, int ep);
void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled);
USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,
uint64_t id);
void usb_attach(USBPort *port);
void usb_detach(USBPort *port);

15
hw/usb/core.c
View File

@ -726,3 +726,18 @@ void usb_ep_set_pipeline(USBDevice *dev, int pid, int ep, bool enabled)
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
uep->pipeline = enabled;
}
USBPacket *usb_ep_find_packet_by_id(USBDevice *dev, int pid, int ep,
uint64_t id)
{
struct USBEndpoint *uep = usb_ep_get(dev, pid, ep);
USBPacket *p;
while ((p = QTAILQ_FIRST(&uep->queue)) != NULL) {
if (p->id == id) {
return p;
}
}
return NULL;
}