Fix sFlow sampling-rate and admin-state #1728

venkatmahalingam · 2021-04-27T00:01:59Z

Fixed incorrect interface admin-status when 'all' interface is disabled but there are local sampling-rate configurations.
The original changes are present in the PR

Signed-off-by: Venkatesan Mahalingam [email protected]

What I did
Fixed a bug where the interface sFlow admin-status is not correct if the user configures a custom sFlow sampling-rate. (UT performed here)

As a side-effect of this fix, users can now restore the default sFlow sampling-rate with the default option using: config sflow interface sampling-rate Ethernet4 default
This is not tested here but will be tested when the config script update PR is submitted to sonic-utilities. The sFlow corresponding HLD and command-line reference will also be updated.

Why I did it
If the user ONLY configures a custom (local) sFlow sampling-rate for a interface, the interface's admin-status should still adhere to the global interface admin-status.

How I verified it

UT cases (added the sonic-vs test case)
Manual testing - see below


root@L6:/home/admin# show sflow

sFlow Global Information:
  sFlow Admin State:          up
  sFlow Polling Interval:     default
  sFlow AgentID:              default

  0 Collectors configured:
root@L6:/home/admin# show sflow interface

sFlow interface configurations
+-------------+---------------+-----------------+
| Interface   | Admin State   |   Sampling Rate |
+=============+===============+=================+
| Ethernet0   | up            |             256 |
+-------------+---------------+-----------------+
| Ethernet4   | up            |             512 |
+-------------+---------------+-----------------+
| Ethernet8   | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet12  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet16  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet20  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet24  | up            |          100000 |
+-------------+---------------+-----------------+
............
...........
root@L6:/home/admin# config sflow interface disable all
root@L6:/home/admin# show sflow interface

sFlow interface configurations
+-------------+---------------+-----------------+
| Interface   | Admin State   | Sampling Rate   |
+=============+===============+=================+
+-------------+---------------+-----------------+
root@L6:/home/admin#
root@L6:/home/admin#
root@L6:/home/admin# config sflow interface enable all
root@L6:/home/admin# show sflow interface

sFlow interface configurations
+-------------+---------------+-----------------+
| Interface   | Admin State   |   Sampling Rate |
+=============+===============+=================+
| Ethernet0   | up            |             256 |
+-------------+---------------+-----------------+
| Ethernet4   | up            |             512 |
+-------------+---------------+-----------------+
| Ethernet8   | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet12  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet16  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet20  | up            |          100000 |

.............
............
root@L6:/home/admin# config sflow interface sample-rate Ethernet0 default
root@L6:/home/admin# show sflow interface

sFlow interface configurations
+-------------+---------------+-----------------+
| Interface   | Admin State   |   Sampling Rate |
+=============+===============+=================+
| Ethernet0   | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet4   | up            |             512 |
+-------------+---------------+-----------------+
| Ethernet8   | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet12  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet16  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet20  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet24  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet28  | up            |          100000 |
+-------------+---------------+-----------------+
| Ethernet32  | up            |          100000 |
+-------------+---------------+-----------------+

...................

…ed but there are local sampling-rate configurations. Signed-off-by: Venkatesan Mahalingam <[email protected]>

Signed-off-by: Venkatesan Mahalingam <[email protected]>

venkatmahalingam · 2021-04-27T05:54:44Z

@prsunny @dgsudharsan Please review this PR.

liat-grozovik · 2021-04-27T06:22:21Z

@venkatmahalingam can you please verify if this can be taken to 202012?
The idea is to have sflow fully qualified as part of 202012 so if this is a bug fix we should consider it to be included.
But this can be done only if you can confirm it is cleanly cherry picked and working as expected. 10x

venkatmahalingam · 2021-04-27T16:52:39Z

@venkatmahalingam can you please verify if this can be taken to 202012?
The idea is to have sflow fully qualified as part of 202012 so if this is a bug fix we should consider it to be included.
But this can be done only if you can confirm it is cleanly cherry picked and working as expected. 10x

@liat-grozovik Cherry-pick to 202012 works fine if we do it in the PR merge order i.e first Vivek's commit and then this PR commit.

build:~/202012/sonic-swss$ git cherry-pick d9f28b6
[202012 f6d4dfc] [SflowMgr] SamplingRate Update by Speed Change Added (#1721)
 Author: Vivek Reddy <[email protected]>
 Date: Sun Apr 25 00:43:15 2021 -0400
 2 files changed, 57 insertions(+), 4 deletions(-)
build:~/202012/sonic-swss$
build:~/202012/sonic-swss$
build:~/202012/sonic-swss$ git cherry-pick 77f6c59
[202012 ecce87d] Fixed incorrect interface admin-status when 'all' interface is disabled but there are local sampling-rate configurations.
 Date: Mon Apr 26 23:57:29 2021 +0000
 3 files changed, 67 insertions(+), 11 deletions(-)
build:~/202012/sonic-swss$ git cherry-pick bd9ce69
[202012 878f194] UT done
 Date: Tue Apr 27 05:50:57 2021 +0000
 1 file changed, 14 insertions(+), 12 deletions(-)
build:~/202012/sonic-swss$ git cherry-pick 2efe415
[202012 f3c49ea] Added new testcase.
 Date: Tue Apr 27 17:38:48 2021 +0000
 1 file changed, 36 insertions(+), 1 deletion(-)
build:~/202012/sonic-swss$

Signed-off-by: Venkatesan Mahalingam <[email protected]>

lgtm-com · 2021-04-27T18:34:29Z

This pull request introduces 1 alert when merging 2efe415 into b962a60 - view on LGTM.com

new alerts:

1 for Unused local variable

prsunny · 2021-04-27T23:35:36Z

@dgsudharsan, please review

prsunny · 2021-04-27T23:36:01Z

The PR is failing on VS test

AssertionError: Did not expect field/values to match, but they did: provided={'sample_rate': '256', 'admin_state': 'up'}, received={'sample_rate': '256', 'admin_state': 'up'}, key="Ethernet0", table="SFLOW_SESSION_TABLE"

Signed-off-by: Venkatesan Mahalingam <[email protected]>

venkatmahalingam · 2021-04-27T23:52:01Z

The PR is failing on VS test

AssertionError: Did not expect field/values to match, but they did: provided={'sample_rate': '256', 'admin_state': 'up'}, received={'sample_rate': '256', 'admin_state': 'up'}, key="Ethernet0", table="SFLOW_SESSION_TABLE"

Yes, looking into the failures.

vivekrnv · 2021-04-28T00:17:18Z

cfgmgr/sflowmgr.cpp

@@ -108,7 +109,8 @@ void SflowMgr::sflowUpdatePortInfo(Consumer &consumer)
            if (m_gEnable && m_intfAllConf)
            {
                // If the Local Conf is already present, dont't override it even though the speed is changed
-                if (new_port || (speed_change && !m_sflowPortConfMap[key].local_conf))
+                if (new_port || (speed_change && 
+                   !(m_sflowPortConfMap[key].local_rate_cfg || m_sflowPortConfMap[key].local_admin_cfg)))


This can be removed "|| m_sflowPortConfMap[key].local_admin_cfg" as the rate update based on speed change is only blocked if there is any local_rate_cfg. It doesn't depend on local_admin_cfg.

Signed-off-by: Venkatesan Mahalingam <[email protected]>

venkatmahalingam · 2021-04-30T03:50:59Z

@prsunny @dgsudharsan @vivekreddynv This PR is ready to merge, please review and approve the same.

Also, the below PRs for SONiC CLI & HLD changes.
https://github.com/Azure/sonic-utilities/pull/845/files
sonic-net/SONiC#755

dgsudharsan · 2021-08-23T23:53:48Z

@prsunny @venkatmahalingam Request for cherry-pick to 202012

* Fixed incorrect interface admin-status when 'all' interface is disabled but there are local sampling-rate configurations. Signed-off-by: Venkatesan Mahalingam <[email protected]>

In order to include the following commits: d29a49a 2021-08-25 [ACL] Match TCP protocol while matching TCP_FLAG (sonic-net/sonic-swss#1854) 2569ad9 2021-08-25 Fix sFlow sampling-rate and admin-state (sonic-net/sonic-swss#1728) 8908a8f 2021-08-19 Change rif_rates.lua and port_rates.lua scripts to calculate rates correct (sonic-net/sonic-swss#1848) b42c2fb 2021-08-19 [VS Test] Skip flaky tests (sonic-net/sonic-swss#1875)

* Fixed incorrect interface admin-status when 'all' interface is disabled but there are local sampling-rate configurations. Signed-off-by: Venkatesan Mahalingam <[email protected]>

Fixed incorrect interface admin-status when 'all' interface is disabl…

77f6c59

…ed but there are local sampling-rate configurations. Signed-off-by: Venkatesan Mahalingam <[email protected]>

venkatmahalingam mentioned this pull request Apr 27, 2021

swss: Fix sFlow sampling-rate and admin-state #1224

Closed

UT done

bd9ce69

Signed-off-by: Venkatesan Mahalingam <[email protected]>

liat-grozovik changed the title ~~swss: Fix sFlow sampling-rate and admin-state~~ Fix sFlow sampling-rate and admin-state Apr 27, 2021

liat-grozovik added the Bug 🐛 label Apr 27, 2021

Added new testcase.

2efe415

Signed-off-by: Venkatesan Mahalingam <[email protected]>

Updated the test case.

b848450

Signed-off-by: Venkatesan Mahalingam <[email protected]>

vivekrnv reviewed Apr 28, 2021

View reviewed changes

Comment addressed.

54d8e3d

Signed-off-by: Venkatesan Mahalingam <[email protected]>

dgsudharsan previously approved these changes Apr 28, 2021

View reviewed changes

Test case updated.

40370c9

Signed-off-by: Venkatesan Mahalingam <[email protected]>

venkatmahalingam dismissed dgsudharsan’s stale review via 40370c9 April 28, 2021 19:56

venkatmahalingam added 3 commits April 28, 2021 23:36

Test case updated.

7997f3f

Signed-off-by: Venkatesan Mahalingam <[email protected]>

Fixed the test case failure.

b2229b9

Signed-off-by: Venkatesan Mahalingam <[email protected]>

Updated.

6a1fcf9

Signed-off-by: Venkatesan Mahalingam <[email protected]>

dgsudharsan approved these changes Apr 30, 2021

View reviewed changes

prsunny approved these changes Apr 30, 2021

View reviewed changes

prsunny merged commit 91068fb into sonic-net:master Apr 30, 2021

venkatmahalingam mentioned this pull request May 10, 2021

Add 'default' option for sFlow. sonic-net/sonic-utilities#1606

Merged

prsunny added the Request for 202012 Branch label Aug 24, 2021

qiluo-msft added the Included in 202012 Branch label Aug 25, 2021

This was referenced Aug 25, 2021

[202012] [submodule] sonic-swss submodule update sonic-net/sonic-buildimage#8582

Merged

Update sonic-swss hash to d29a49a noaOrMlnx/sonic-buildimage#17

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Fix sFlow sampling-rate and admin-state #1728

Fix sFlow sampling-rate and admin-state #1728

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Fix sFlow sampling-rate and admin-state #1728

Fix sFlow sampling-rate and admin-state #1728

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