Bug 1134 - net/i40e Tx prepare unexpectedly rejects packet with tunnel type set and no offloads requested
Summary: net/i40e Tx prepare unexpectedly rejects packet with tunnel type set and no o...
Status: UNCONFIRMED
Alias: None
Product: DPDK
Classification: Unclassified
Component: ethdev (show other bugs)
Version: 22.11
Hardware: All All
: Normal normal
Target Milestone: ---
Assignee: Zhang Yuying
URL:
Depends on:
Blocks:
 
Reported: 2022-11-30 08:19 CET by Andrew Rybchenko
Modified: 2023-11-03 07:55 CET (History)
3 users (show)


Attachments
Add an attachment (proposed patch, testcase, etc.)

Description Andrew Rybchenko 2022-11-30 08:19:36 CET 
net/i40e Tx prepare unexpectedly rejects packet with tunnel type set and no offloads requested

Tunnel type (e.g. RTE_MBUF_F_TX_TUNNEL_VXLAN) is just an auxiliary information which does not request any Tx offload itself (similar to RTE_MBUF_F_TX_IPV4).
So, if a packet has the tunnel type set it should not be rejected by i40e_simple_prep_pkts() as unsupported offload requested. I.e. RTE_MBUF_F_TX_TUNNEL_MASK should be included in I40E_TX_OFFLOAD_SIMPLE_SUP_MASK.

Found using [1]. Line 48 [2] sets ol_flags. Line 79 [3] shows that the packet is rejected by Tx prepare.  Requested Tx offload can be found in line 31 [4]

[1] https://ts-factory.io/bublik/v2/log/243407?focusId=249938&mode=treeAndinfoAndlog
[2] https://ts-factory.io/logs/2022/11/29/balin-x710-p0-22/html/node_id6531.html#line48
[3] https://ts-factory.io/logs/2022/11/29/balin-x710-p0-22/html/node_id6531.html#line79
[3] https://ts-factory.io/logs/2022/11/29/balin-x710-p0-22/html/node_id6531.html#line31
Comment 1 dengkaiwen 2023-11-03 07:55:06 CET 
please offer the reproduce steps with standard DPDK API like testpmd, l3fwd and other examples.
Note You need to log in before you can comment on or make changes to this bug.