https://bugs.linaro.org/show_bug.cgi?id=3686
Bug ID: 3686
Summary: IP header checksum not inserted if L4 offset not set
Product: OpenDataPlane - linux- generic reference
Version: master
Hardware: x86
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: ---
Component: Packet IO
Assignee: maxim.uva...@linaro.org
Reporter: janne.pelto...@nokia.com
CC: lng-odp@lists.linaro.org
Target Milestone: ---
When IPv4 header checksum offload is requested from DPDK pktio in ODP
v1.18.0.1, the checksum does not get inserted if L4 offset of the packet is not
set. See pkt_set_ol_tx() in dpdk.c.
The API spec says (odp_pktout_config_opt_t):
* For correct operation, packet metadata must provide valid offsets for the
* appropriate protocols. For example, UDP checksum calculation needs both L3
* and L4 offsets (to access IP and UDP headers).
The way I read this is that valid L4 offset is not required if offload is
requested only for IPv4 header checksum.
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