[dpdk-users] Checksum offloading on gre outer-ip in dpdk-16.11
Eyal.Leshem at imperva.com
Wed Feb 22 08:16:57 CET 2017
I use checksum-offloading for calculating the checksum of packets that i change/create inside my app.
I use it for regular packets and for gre packets (on gre - the checksum is calculated on the outer-header).
On dpdk-16.07 everything works fine , But when i try to use that with DPDK-16.11 it seems that the offloading on GRE packets does not work (while on the regular packets it still works fine).
In dpdk-16.07 I use the following flags on my mbuf to mark to the NIC that the packets need checksum calculation (m is the "struct rte_mbuf"):
"m->ol_flags |= PKT_TX_OUTER_IPV4|PKT_TX_OUTER_IP_CKSUM;"
On 16.11 I tried to add also the PKT_TX_TUNNEL_GRE (As i saw that addition in "csumonly.c" in the 16.11 version in the "pmd-test" app) - but that also didn't help.
My NIC is : "Intel Corporation Ethernet Controller X710 for 10Gbe backplane"
And i run my app in Ubuntu-14.0.4.
Thanks in advance -
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