[action] [PR:12530] Fix qos/test_pfc_pause.py for dualtor-aa

[mssonicbld]

Description of PR

Summary: Fix qos/test_pfc_pause.py for dualtor-aa
Fixes: #100

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• Test case(new/improvement)

Back port request

• 201911
• 202012
• 202205
• 202305
• 202311

Approach

What is the motivation for this PR?

qos/test_pfc_pause.py fails on dualtor-aa

 errors = dict()
 for intf in results:
 if len(results[intf]) != 2:
 continue
 
 pass_count = results[intf][0]
 total_count = results[intf][1]
 
 if total_count == 0:
 continue
 
 if pass_count < total_count LICENSE README.md SECURITY.md ansible azure-pipelines.yml docs git pyproject.toml sdn_tests setup-container.sh spytest test_reporting tests PTF_PASS_RATIO_THRESH:
 errors[intf] = results[intf]
 
 if len(errors) > 0:
 test_errors += "Dscp: {}, Background Dscp: {}, errors occured: {}\n"\
 .format(dscp, dscp_bg, " ".join(["{}:{}".format(k, v) for k, v in list(errors.items())]))
 
> pytest_assert(len(test_errors) == 0, test_errors)
E Failed: Dscp: [3], Background Dscp: 4, errors occured: Ethernet12:[0, 20]
E Dscp: [3], Background Dscp: 0, errors occured: Ethernet12:[0, 20]
E Dscp: [3], Background Dscp: 1, errors occured: Ethernet12:[0, 20]

 errors = dict()
 for intf in results:
 if len(results[intf]) != 2:
 continue
 
 pass_count = results[intf][0]
 total_count = results[intf][1]
 
 if total_count == 0:
 continue
 
 if pass_count < total_count LICENSE README.md SECURITY.md ansible azure-pipelines.yml docs git pyproject.toml sdn_tests setup-container.sh spytest test_reporting tests PTF_PASS_RATIO_THRESH:
 errors[intf] = results[intf]
 
 if len(errors) > 0:
 test_errors += "Dscp: {}, Background Dscp: {}, errors occured: {}\n"\
 .format(dscp, dscp_bg, " ".join(["{}:{}".format(k, v) for k, v in list(errors.items())]))
 
> pytest_assert(len(test_errors) == 0, test_errors)
E Failed: Dscp: [4], Background Dscp: 3, errors occured: Ethernet12:[0, 20]
E Dscp: [4], Background Dscp: 0, errors occured: Ethernet12:[0, 20]
E Dscp: [4], Background Dscp: 1, errors occured: Ethernet12:[0, 20]

This happens because the packets go to unselected ToR.

How did you do it?

Follow the same approach as in #11921

How did you verify/test it?

Verified on Arista-7260 platform with both dualtor-aa and dualtor topology.

qos/test_pfc_pause.py::test_pfc_pause_lossless[gd377|2] SKIPPED (Fanout needs to send PFC fra...) [ 6%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd377|3] SKIPPED (Fanout needs to send PFC fra...) [ 12%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd377|4] SKIPPED (Fanout needs to send PFC fra...) [ 18%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd377|6] SKIPPED (Fanout needs to send PFC fra...) [ 25%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd426|2] SKIPPED (Fanout needs to send PFC fra...) [ 31%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd426|3] SKIPPED (Fanout needs to send PFC fra...) [ 37%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd426|4] SKIPPED (Fanout needs to send PFC fra...) [ 43%]
qos/test_pfc_pause.py::test_pfc_pause_lossless[gd426|6] SKIPPED (Fanout needs to send PFC fra...) [ 50%]
qos/test_pfc_pause.py::test_no_pfc[gd377|2] SKIPPED (No DSCP found for priority 2.) [ 56%]
qos/test_pfc_pause.py::test_no_pfc[gd377|3] PASSED [ 62%]
qos/test_pfc_pause.py::test_no_pfc[gd377|4] PASSED [ 68%]
qos/test_pfc_pause.py::test_no_pfc[gd377|6] SKIPPED (No DSCP found for priority 6.) [ 75%]
qos/test_pfc_pause.py::test_no_pfc[gd426|2] SKIPPED (No DSCP found for priority 2.) [ 81%]
qos/test_pfc_pause.py::test_no_pfc[gd426|3] PASSED [ 87%]
qos/test_pfc_pause.py::test_no_pfc[gd426|4] PASSED [ 93%]
qos/test_pfc_pause.py::test_no_pfc[gd426|6] SKIPPED (No DSCP found for priority 6.) [100%]

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[mssonicbld]

Original PR: #12530