On Saturday, August 04, 2012 3:21:23 pm Tim Kientzle wrote: > I believe that some of the issues I'm having with this > Ethernet driver might be easier to diagnose if I could > expose the chip-level statistics counters (especially queue > overrun counts). > > Is there a standard way to do this? > > I've looked at systat, netstat, and ifconfig but haven't > yet found a standard tool that queries this sort of > information. (If I could find that, I could figure out > which ioctl it used…) > > Pointers appreciated… In particular, if there's another > Ethernet driver that does this well, I can use that for a > reference.
Several drivers (igb, em, cxgb, cxgbe, ixgbe, etc.) just expose a "stats" sysctl node under the device and populate that with stats. Typically they install a SYSCTL_PROC() that directly queries the register. In some cases they read the registers via a timer and cache the results and the sysctl handlers returned the cached results. -- John Baldwin _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "freebsd-hackers-unsubscr...@freebsd.org"
