On Thu, 15 Apr 2021 at 15:31, Riccardo Ravaioli <riccardoravai...@gmail.com>
wrote:
> I noticed something weird when using an I225 interface in OVS-DPDK:
> outgoing packets are processed normally, while incoming packets get
> truncated. In particular, starting from a certain IP packet length, the
> last 4 Bytes are always truncated.
> [...]
>
So we did a quick hack to force CRC stripping when the DPDK driver in use
is net_igc. It seems to work, but we're not too sure about possible side
effects.
Here is the patch:
diff -ru openvswitch-2.15.0.orig/lib/netdev-dpdk.c
openvswitch-2.15.0/lib/netdev-dpdk.c
--- openvswitch-2.15.0.orig/lib/netdev-dpdk.c 2021-02-15
19:24:17.748074628 +0100
+++ openvswitch-2.15.0/lib/netdev-dpdk.c 2021-04-21 15:21:20.575265997
+0200
@@ -1105,7 +1105,11 @@
if (strstr(info.driver_name, "vf") != NULL) {
VLOG_INFO("Virtual function detected, HW_CRC_STRIP will be
enabled");
dev->hw_ol_features |= NETDEV_RX_HW_CRC_STRIP;
+ } else if (!strcmp(info.driver_name, "net_igc")) {
+ VLOG_INFO("net_igc driver detected, HW_CRC_STRIP will be enabled");
+ dev->hw_ol_features |= NETDEV_RX_HW_CRC_STRIP;
} else {
+ VLOG_INFO("dpdk_eth_dev_init, HW_CRC_STRIP will be disabled");
dev->hw_ol_features &= ~NETDEV_RX_HW_CRC_STRIP;
}
What do you guys think?
Thanks!
Riccardo
_______________________________________________
discuss mailing list
disc...@openvswitch.org
https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
