[src/trunk]: src/sys/arch/xen/xen enable Rx checkum offload (i.e. skip) for x...

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

details:   https://anonhg.NetBSD.org/src/rev/4d4b4d026ffe
branches:  trunk
changeset: 970801:4d4b4d026ffe
user:      jdolecek <jdolecek%NetBSD.org@localhost>
date:      Sat Apr 04 14:45:37 2020 +0000

description:
enable Rx checkum offload (i.e. skip) for xen netback; it works well
as long as netfront in DomU is configured to fill the checksum

documentation will be updated to recommend how the flags should be setup
on each side of the xennet(4)/xvif(4) pair

diffstat:

 sys/arch/xen/xen/xennetback_xenbus.c |  14 +++++++-------
 1 files changed, 7 insertions(+), 7 deletions(-)

diffs (35 lines):

diff -r f8cfa7f7f5c2 -r 4d4b4d026ffe sys/arch/xen/xen/xennetback_xenbus.c
--- a/sys/arch/xen/xen/xennetback_xenbus.c      Sat Apr 04 13:59:16 2020 +0000
+++ b/sys/arch/xen/xen/xennetback_xenbus.c      Sat Apr 04 14:45:37 2020 +0000
@@ -1,4 +1,4 @@
-/*      $NetBSD: xennetback_xenbus.c,v 1.90 2020/03/30 19:07:32 jdolecek Exp $      */
+/*      $NetBSD: xennetback_xenbus.c,v 1.91 2020/04/04 14:45:37 jdolecek Exp $      */
 
 /*
  * Copyright (c) 2006 Manuel Bouyer.
@@ -25,7 +25,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: xennetback_xenbus.c,v 1.90 2020/03/30 19:07:32 jdolecek Exp $");
+__KERNEL_RCSID(0, "$NetBSD: xennetback_xenbus.c,v 1.91 2020/04/04 14:45:37 jdolecek Exp $");
 
 #include "opt_xen.h"
 
@@ -287,11 +287,11 @@
        ifp->if_snd.ifq_maxlen =
            uimax(ifqmaxlen, NET_TX_RING_SIZE * 2);
        ifp->if_capabilities =
-               IFCAP_CSUM_IPv4_Tx
-               | IFCAP_CSUM_UDPv4_Tx
-               | IFCAP_CSUM_TCPv4_Tx
-               | IFCAP_CSUM_UDPv6_Tx
-               | IFCAP_CSUM_TCPv6_Tx;
+               IFCAP_CSUM_IPv4_Rx | IFCAP_CSUM_IPv4_Tx
+               | IFCAP_CSUM_UDPv4_Rx | IFCAP_CSUM_UDPv4_Tx
+               | IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_TCPv4_Tx
+               | IFCAP_CSUM_UDPv6_Rx | IFCAP_CSUM_UDPv6_Tx
+               | IFCAP_CSUM_TCPv6_Rx | IFCAP_CSUM_TCPv6_Tx;
 #define XN_M_CSUM_SUPPORTED    (                               \
                M_CSUM_TCPv4 | M_CSUM_UDPv4 | M_CSUM_IPv4       \
                | M_CSUM_TCPv6 | M_CSUM_UDPv6                   \