Page MenuHomeFreeBSD

ofed: mask seq_num identifier to occupy only 3 bytes
ClosedPublic

Authored by bartosz.sobczak_intel.com on Aug 21 2023, 9:35 PM.
Tags
None
Referenced Files
Unknown Object (File)
Apr 6 2024, 4:45 PM
Unknown Object (File)
Mar 17 2024, 1:08 AM
Unknown Object (File)
Mar 17 2024, 1:08 AM
Unknown Object (File)
Mar 17 2024, 1:07 AM
Unknown Object (File)
Mar 14 2024, 8:13 AM
Unknown Object (File)
Feb 15 2024, 10:13 AM
Unknown Object (File)
Jan 25 2024, 8:45 PM
Unknown Object (File)
Jan 17 2024, 12:13 PM
Subscribers

Details

Summary

The seq_num among other things is used to assign rq_psn value, which is a 24-bit identifier.
When the seq_num is full 4-byte value, we are usually receiving:
'_ib_modify_qp rq_psn overflow, masking to 24 bits'
warning.

This is burdensome for running rdma traffic with large number of connections, because the number of logs is growing fast.

Sponsored-by: Intel Corporation
Signed-off-by: Bartosz Sobczak <bartosz.sobczak@intel.com>

Diff Detail

Repository
rG FreeBSD src repository
Lint
Lint Not Applicable
Unit
Tests Not Applicable