[src/trunk]: src/sys/dev/usb Fix mue_sethwcsum():

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

details:   https://anonhg.NetBSD.org/src/rev/e3dddae55812
branches:  trunk
changeset: 447993:e3dddae55812
user:      rin <rin%NetBSD.org@localhost>
date:      Wed Jan 30 11:11:45 2019 +0000

description:
Fix mue_sethwcsum():
- Check appropriate flags to enable RX checksum offloading.
- We don't support ICMP/IGMP checksum offloading.

Tested both on LAN7800 and 7500.

diffstat:

 sys/dev/usb/if_mue.c |  30 ++++++++++++++++++------------
 1 files changed, 18 insertions(+), 12 deletions(-)

diffs (52 lines):

diff -r 5b9d7b70ce26 -r e3dddae55812 sys/dev/usb/if_mue.c
--- a/sys/dev/usb/if_mue.c      Wed Jan 30 10:55:44 2019 +0000
+++ b/sys/dev/usb/if_mue.c      Wed Jan 30 11:11:45 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_mue.c,v 1.28 2019/01/22 03:42:28 msaitoh Exp $      */
+/*     $NetBSD: if_mue.c,v 1.29 2019/01/30 11:11:45 rin Exp $  */
 /*     $OpenBSD: if_mue.c,v 1.3 2018/08/04 16:42:46 jsg Exp $  */
 
 /*
@@ -20,7 +20,7 @@
 /* Driver for Microchip LAN7500/LAN7800 chipsets. */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_mue.c,v 1.28 2019/01/22 03:42:28 msaitoh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_mue.c,v 1.29 2019/01/30 11:11:45 rin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_usb.h"
@@ -1402,17 +1402,23 @@
        reg = (sc->mue_flags & LAN7500) ? MUE_7500_RFE_CTL : MUE_7800_RFE_CTL;
        val = mue_csr_read(sc, reg);
 
-       if (ifp->if_capenable & (IFCAP_CSUM_TCPv4_Rx|IFCAP_CSUM_UDPv4_Rx)) {
-               DPRINTF(sc, "enabled\n");
-               val |= MUE_RFE_CTL_IGMP_COE | MUE_RFE_CTL_ICMP_COE;
-               val |= MUE_RFE_CTL_TCPUDP_COE | MUE_RFE_CTL_IP_COE;
+       if (ifp->if_capenable & IFCAP_CSUM_IPv4_Rx) {
+               DPRINTF(sc, "RX IPv4 hwcsum enabled\n");
+               val |= MUE_RFE_CTL_IP_COE;
        } else {
-               DPRINTF(sc, "disabled\n");
-               val &=
-                   ~(MUE_RFE_CTL_IGMP_COE | MUE_RFE_CTL_ICMP_COE);
-               val &=
-                   ~(MUE_RFE_CTL_TCPUDP_COE | MUE_RFE_CTL_IP_COE);
-        }
+               DPRINTF(sc, "RX IPv4 hwcsum disabled\n");
+               val &= ~MUE_RFE_CTL_IP_COE;
+       }
+
+       if (ifp->if_capenable &
+           (IFCAP_CSUM_TCPv4_Rx | IFCAP_CSUM_UDPv4_Rx |
+            IFCAP_CSUM_TCPv6_Rx | IFCAP_CSUM_UDPv6_Rx)) {
+               DPRINTF(sc, "RX L4 hwcsum enabled\n");
+               val |= MUE_RFE_CTL_TCPUDP_COE;
+       } else {
+               DPRINTF(sc, "RX L4 hwcsum disabled\n");
+               val &= ~MUE_RFE_CTL_TCPUDP_COE;
+       }
 
        val &= ~MUE_RFE_CTL_VLAN_FILTER;