qemu/0625-usb-redir-Change-cancelled-packet-code-into-a-generi.patch
2012-10-28 14:05:07 -04:00

185 lines
5.4 KiB
Diff

From 5b44a6c9c102b69690adcc2c5be886857ea35ebd Mon Sep 17 00:00:00 2001
From: Hans de Goede <hdegoede@redhat.com>
Date: Tue, 4 Sep 2012 14:18:34 +0200
Subject: [PATCH] usb-redir: Change cancelled packet code into a generic
packet-id queue
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
hw/usb/redirect.c | 102 +++++++++++++++++++++++++++++++++++++-----------------
1 file changed, 71 insertions(+), 31 deletions(-)
diff --git a/hw/usb/redirect.c b/hw/usb/redirect.c
index f183263..e2b8159 100644
--- a/hw/usb/redirect.c
+++ b/hw/usb/redirect.c
@@ -43,7 +43,6 @@
#define EP2I(ep_address) (((ep_address & 0x80) >> 3) | (ep_address & 0x0f))
#define I2EP(i) (((i & 0x10) << 3) | (i & 0x0f))
-typedef struct Cancelled Cancelled;
typedef struct USBRedirDevice USBRedirDevice;
/* Struct to hold buffered packets (iso or int input packets) */
@@ -69,6 +68,18 @@ struct endp_data {
int bufpq_target_size;
};
+struct PacketIdQueueEntry {
+ uint64_t id;
+ QTAILQ_ENTRY(PacketIdQueueEntry)next;
+};
+
+struct PacketIdQueue {
+ USBRedirDevice *dev;
+ const char *name;
+ QTAILQ_HEAD(, PacketIdQueueEntry) head;
+ int size;
+};
+
struct USBRedirDevice {
USBDevice dev;
/* Properties */
@@ -86,7 +97,7 @@ struct USBRedirDevice {
int64_t next_attach_time;
struct usbredirparser *parser;
struct endp_data endpoint[MAX_ENDPOINTS];
- QTAILQ_HEAD(, Cancelled) cancelled;
+ struct PacketIdQueue cancelled;
/* Data for device filtering */
struct usb_redir_device_connect_header device_info;
struct usb_redir_interface_info_header interface_info;
@@ -94,11 +105,6 @@ struct USBRedirDevice {
int filter_rules_count;
};
-struct Cancelled {
- uint64_t id;
- QTAILQ_ENTRY(Cancelled)next;
-};
-
static void usbredir_hello(void *priv, struct usb_redir_hello_header *h);
static void usbredir_device_connect(void *priv,
struct usb_redir_device_connect_header *device_connect);
@@ -251,37 +257,75 @@ static int usbredir_write(void *priv, uint8_t *data, int count)
* Cancelled and buffered packets helpers
*/
-static void usbredir_cancel_packet(USBDevice *udev, USBPacket *p)
+static void packet_id_queue_init(struct PacketIdQueue *q,
+ USBRedirDevice *dev, const char *name)
{
- USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev);
- Cancelled *c;
+ q->dev = dev;
+ q->name = name;
+ QTAILQ_INIT(&q->head);
+ q->size = 0;
+}
+
+static void packet_id_queue_add(struct PacketIdQueue *q, uint64_t id)
+{
+ USBRedirDevice *dev = q->dev;
+ struct PacketIdQueueEntry *e;
+
+ DPRINTF("adding packet id %"PRIu64" to %s queue\n", id, q->name);
+
+ e = g_malloc0(sizeof(struct PacketIdQueueEntry));
+ e->id = id;
+ QTAILQ_INSERT_TAIL(&q->head, e, next);
+ q->size++;
+}
+
+static int packet_id_queue_remove(struct PacketIdQueue *q, uint64_t id)
+{
+ USBRedirDevice *dev = q->dev;
+ struct PacketIdQueueEntry *e;
+
+ QTAILQ_FOREACH(e, &q->head, next) {
+ if (e->id == id) {
+ DPRINTF("removing packet id %"PRIu64" from %s queue\n",
+ id, q->name);
+ QTAILQ_REMOVE(&q->head, e, next);
+ q->size--;
+ g_free(e);
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static void packet_id_queue_empty(struct PacketIdQueue *q)
+{
+ USBRedirDevice *dev = q->dev;
+ struct PacketIdQueueEntry *e, *next_e;
- DPRINTF("cancel packet id %"PRIu64"\n", p->id);
+ DPRINTF("removing %d packet-ids from %s queue\n", q->size, q->name);
- c = g_malloc0(sizeof(Cancelled));
- c->id = p->id;
- QTAILQ_INSERT_TAIL(&dev->cancelled, c, next);
+ QTAILQ_FOREACH_SAFE(e, &q->head, next, next_e) {
+ QTAILQ_REMOVE(&q->head, e, next);
+ g_free(e);
+ }
+ q->size = 0;
+}
+static void usbredir_cancel_packet(USBDevice *udev, USBPacket *p)
+{
+ USBRedirDevice *dev = DO_UPCAST(USBRedirDevice, dev, udev);
+
+ packet_id_queue_add(&dev->cancelled, p->id);
usbredirparser_send_cancel_data_packet(dev->parser, p->id);
usbredirparser_do_write(dev->parser);
}
static int usbredir_is_cancelled(USBRedirDevice *dev, uint64_t id)
{
- Cancelled *c;
-
if (!dev->dev.attached) {
return 1; /* Treat everything as cancelled after a disconnect */
}
-
- QTAILQ_FOREACH(c, &dev->cancelled, next) {
- if (c->id == id) {
- QTAILQ_REMOVE(&dev->cancelled, c, next);
- g_free(c);
- return 1;
- }
- }
- return 0;
+ return packet_id_queue_remove(&dev->cancelled, id);
}
static USBPacket *usbredir_find_packet_by_id(USBRedirDevice *dev,
@@ -937,7 +981,7 @@ static int usbredir_initfn(USBDevice *udev)
dev->chardev_close_bh = qemu_bh_new(usbredir_chardev_close_bh, dev);
dev->attach_timer = qemu_new_timer_ms(vm_clock, usbredir_do_attach, dev);
- QTAILQ_INIT(&dev->cancelled);
+ packet_id_queue_init(&dev->cancelled, dev, "cancelled");
for (i = 0; i < MAX_ENDPOINTS; i++) {
QTAILQ_INIT(&dev->endpoint[i].bufpq);
}
@@ -955,13 +999,9 @@ static int usbredir_initfn(USBDevice *udev)
static void usbredir_cleanup_device_queues(USBRedirDevice *dev)
{
- Cancelled *c, *next_c;
int i;
- QTAILQ_FOREACH_SAFE(c, &dev->cancelled, next, next_c) {
- QTAILQ_REMOVE(&dev->cancelled, c, next);
- g_free(c);
- }
+ packet_id_queue_empty(&dev->cancelled);
for (i = 0; i < MAX_ENDPOINTS; i++) {
usbredir_free_bufpq(dev, I2EP(i));
}
--
1.7.12.1