[src/trunk]: src/sys/dev/pci/ixgbe Update comment in ixgbe_update_stats_count...

[msaitoh <msaitoh%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/7da7493d7683
branches:  trunk
changeset: 969016:7da7493d7683
user:      msaitoh <msaitoh%NetBSD.org@localhost>
date:      Wed Feb 05 01:44:53 2020 +0000

description:
Update comment in ixgbe_update_stats_counters() to clarify why we update
if_iqdrops and if_ierrors only. No functional change.
OK'd by knakahara and thorpej.

diffstat:

 sys/dev/pci/ixgbe/ixgbe.c |  12 ++++--------
 1 files changed, 4 insertions(+), 8 deletions(-)

diffs (28 lines):

diff -r 30d584752bd6 -r 7da7493d7683 sys/dev/pci/ixgbe/ixgbe.c
--- a/sys/dev/pci/ixgbe/ixgbe.c Tue Feb 04 21:34:47 2020 +0000
+++ b/sys/dev/pci/ixgbe/ixgbe.c Wed Feb 05 01:44:53 2020 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: ixgbe.c,v 1.223 2020/02/04 19:42:55 thorpej Exp $ */
+/* $NetBSD: ixgbe.c,v 1.224 2020/02/05 01:44:53 msaitoh Exp $ */
 
 /******************************************************************************
 
@@ -1708,15 +1708,11 @@
                stats->fcoedwtc.ev_count += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC);
        }
 
-       /* Fill out the OS statistics structure */
        /*
-        * NetBSD: Don't override if_{i|o}{packets|bytes|mcasts} with
-        * adapter->stats counters. It's required to make ifconfig -z
-        * (SOICZIFDATA) work.
+        * Fill out the OS statistics structure. Only RX errors are required
+        * here because all TX counters are incremented in the TX path and
+        * normal RX counters are prepared in ether_input().
         */
-       /* XXX Actually, just fill in the per-cpu stats, please !!! */
-
-       /* Rx Errors */
        net_stat_ref_t nsr = IF_STAT_GETREF(ifp);
        if_statadd_ref(nsr, if_iqdrops, total_missed_rx);
        if_statadd_ref(nsr, if_ierrors, crcerrs + rlec);