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Explicitly UP and DOWN the usbus interfaces (IFT_USB) when it's attached

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or detached.  Normally it should be changed through user land ioctl(2)
system calls but it looks there's no apps for USB and no need.

With this patch, libpcap would detect the usbus interfaces correctly and
tcpdump(1) could dump the USB packets into PCAP format with -w option.
However it couldn't print the output to console because there's no
printer-routine at tcpdump(1).
This commit is contained in:
Weongyo Jeong 2010-12-01 03:51:06 +00:00
parent 05cb58f669
commit b172e30376
1 changed files with 2 additions and 0 deletions
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2
sys/dev/usb/usb_pf.c
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@ -65,6 +65,7 @@ usbpf_attach(struct usb_bus *ubus)
ifp = ubus->ifp = if_alloc(IFT_USB);
if_initname(ifp, "usbus", device_get_unit(ubus->bdev));
if_attach(ifp);
if_up(ifp);
KASSERT(sizeof(struct usbpf_pkthdr) == USBPF_HDR_LEN,
("wrong USB pf header length (%zd)", sizeof(struct usbpf_pkthdr)));
@ -86,6 +87,7 @@ usbpf_detach(struct usb_bus *ubus)
if (ifp != NULL) {
bpfdetach(ifp);
if_down(ifp);
if_detach(ifp);
if_free(ifp);
}