* [dpdk-dev] [Bug 784] i40evf rx bytes statistics is losing 4 bytes per packet for vfs from same pf
@ 2021-08-09 4:14 bugzilla
0 siblings, 0 replies; only message in thread
From: bugzilla @ 2021-08-09 4:14 UTC (permalink / raw)
To: dev
https://bugs.dpdk.org/show_bug.cgi?id=784
Bug ID: 784
Summary: i40evf rx bytes statistics is losing 4 bytes per
packet for vfs from same pf
Product: DPDK
Version: unspecified
Hardware: All
OS: All
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: ethdev
Assignee: dev@dpdk.org
Reporter: 839872562@qq.com
Target Milestone: ---
Recently, I found an interesting problem on i40evf(X710). It seems something is
wrong when using the interface i40evf_dev_stats_get to get bytes statistics.
1. When using vfs from two pfs for tx/rx, the bytes statistics is correct.
2. When using two vfs of the same pf for tx/rx, the rx bytes statistics is
losing 4 bytes per packet.
I have checked mbufs in the rx funcation, and the pkt_len is corrent in both
scenes. Seems it's related to CRC Strip, but needs further confirmation.
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