From: Johannes Stezenbach Date: Thu, 8 Sep 2011 13:39:15 +0000 (+0200) Subject: usbmon vs. tcpdump: fix dropped packet count X-Git-Tag: v2.6.33.20~45 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d01f24effa7cc7e480ef08291fa3359179ddff0e;p=thirdparty%2Fkernel%2Fstable.git usbmon vs. tcpdump: fix dropped packet count commit 236c448cb6e7f82096101e1ace4b77f8b38f82c8 upstream. Report the number of dropped packets instead of zero when using the binary usbmon interface with tcpdump. # tcpdump -i usbmon1 -w dump tcpdump: listening on usbmon1, link-type USB_LINUX_MMAPPED (USB with padded Linux header), capture size 65535 bytes ^C2155 packets captured 2155 packets received by filter 1019 packets dropped by kernel Signed-off-by: Johannes Stezenbach Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 385ec05201670..fa5bd93c7a3fb 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -1074,7 +1074,7 @@ static int mon_bin_ioctl(struct inode *inode, struct file *file, nevents = mon_bin_queued(rp); sp = (struct mon_bin_stats __user *)arg; - if (put_user(rp->cnt_lost, &sp->dropped)) + if (put_user(ndropped, &sp->dropped)) return -EFAULT; if (put_user(nevents, &sp->queued)) return -EFAULT;