Adds a USB packet filter feature to the stack that it could capture

packets which go through each USB host controllers.  Its implementations
are almost based on BPF code and very similar with it except it's
little bit customized for USB packet only.  The userland program
usbdump(8) would be committed soon.

Discussed with:	hps, thompsa, yongari

1 files changed, 8 insertions, 0 deletions

diff --git a/sys/dev/usb/usb_transfer.c b/sys/dev/usb/usb_transfer.c
index e0f5a3b..cdaa227 100644
--- a/sys/dev/usb/usb_transfer.c
+++ b/sys/dev/usb/usb_transfer.c
@@ -60,6 +60,7 @@
 
 #include <dev/usb/usb_controller.h>
 #include <dev/usb/usb_bus.h>
+#include <dev/usb/usb_pf.h>
 
 struct usb_std_packet_size {
 	struct {
@@ -2196,6 +2197,9 @@ usbd_callback_wrapper(struct usb_xfer_queue *pq)
 		}
 	}
 
+	if (xfer->usb_state != USB_ST_SETUP)
+		usbpf_xfertap(xfer, USBPF_XFERTAP_DONE);
+
 	/* call processing routine */
 	(xfer->callback) (xfer, xfer->error);
 
@@ -2383,6 +2387,8 @@ usbd_transfer_start_cb(void *arg)
 
 	DPRINTF("start\n");
 
+	usbpf_xfertap(xfer, USBPF_XFERTAP_SUBMIT);
+
 	/* start the transfer */
 	(ep->methods->start) (xfer);
 
@@ -2560,6 +2566,8 @@ usbd_pipe_start(struct usb_xfer_queue *pq)
 	}
 	DPRINTF("start\n");
 
+	usbpf_xfertap(xfer, USBPF_XFERTAP_SUBMIT);
+
 	/* start USB transfer */
 	(ep->methods->start) (xfer);