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D58054.id.diff
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D58054.id.diff

diff --git a/sys/net/if_epair.c b/sys/net/if_epair.c
--- a/sys/net/if_epair.c
+++ b/sys/net/if_epair.c
@@ -351,6 +351,10 @@
return (E2BIG);
}
+ if ((ifp->if_capenable & IFCAP_MEXTPG) == 0) {
+ M_ASSERTMAPPED(m);
+ }
+
/*
* We are not going to use the interface en/dequeue mechanism
* on the TX side. We are called from ether_output_frame()
@@ -632,7 +636,8 @@
ifp->if_capabilities =
IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING |
IFCAP_TXCSUM | IFCAP_RXCSUM |
- IFCAP_TXCSUM_IPV6 | IFCAP_RXCSUM_IPV6;
+ IFCAP_TXCSUM_IPV6 | IFCAP_RXCSUM_IPV6 |
+ IFCAP_MEXTPG;
ifp->if_capenable = ifp->if_capabilities;
epair_caps_changed(ifp);
ifp->if_transmit = epair_transmit;
diff --git a/tests/sys/common/vnet.subr b/tests/sys/common/vnet.subr
--- a/tests/sys/common/vnet.subr
+++ b/tests/sys/common/vnet.subr
@@ -46,7 +46,9 @@
# compute checksums, it just marks packets that this computation still
# needs to be done. However, some test cases verify the checksum.
# Therefore disable this for IPv4 and IPv6.
- ifconfig ${ifname} -txcsum -txcsum6
+ # Also disable MEXTPG support, so the tests can verify that the network
+ # stack don't pass MEXTPG mbufs to interfaces that don't support it.
+ ifconfig ${ifname} -txcsum -txcsum6 -mextpg
list_interface $ifname
list_interface ${ifname%a}b
echo ${ifname%a}

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