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Bug 2139100

Summary: Unable to set qos_max_rate higher than 4 Gbps
Product: Red Hat Enterprise Linux Fast Datapath Reporter: Ilya Maximets <i.maximets>
Component: ovn22.09Assignee: lorenzo bianconi <lorenzo.bianconi>
Status: CLOSED UPSTREAM QA Contact: ying xu <yinxu>
Severity: high Docs Contact:
Priority: high    
Version: FDP 22.LCC: ctrautma, jiji, jishi, mmichels
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Last Closed: 2025-02-10 04:01:33 UTC Type: Bug
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Description Ilya Maximets 2022-11-01 13:21:39 UTC 
qos_max_rate and other options are in BITS per second and ovn-controller
is using 32 bit integer to store it:

  uint32_t max_rate = smap_get_int(&pb->options, "qos_max_rate", 0);

That limits the maximum value to just 4 Gbps, while 34 Gbps should
be technically possible with netdev_set_qos() API.

64bit values should be used instead.  Also limits are not documented
anywhere, while they should be.

Why 34 Gbps is a max described in BZ 2137619.
Comment 2 OVN Bot 2023-05-19 04:09:07 UTC 
ovn23.06 fast-datapath-rhel-8 clone created at https://bugzilla.redhat.com/show_bug.cgi?id=2208428
ovn23.06 fast-datapath-rhel-9 clone created at https://bugzilla.redhat.com/show_bug.cgi?id=2208429
Comment 3 Red Hat Bugzilla 2025-02-10 04:01:33 UTC 
This product has been discontinued or is no longer tracked in Red Hat Bugzilla.