Test-Label: intel-Testing
Test-Status: SUCCESS 
_Testing PASS 

DPDK git repo: dpdk-next-net-mrvl

commit 9acb447c72a27228b520ff833cafa5aa8f43a431
Author: Harman Kalra <hkalra@marvell.com>
Date:   Mon Jun 5 14:14:23 2023 +0530

    common/cnxk: fix mailbox timeout due to deadlock
    
    PF receives all the VFs mailbox/FLR messages which it forwards to AF.
    This is all handled by interrupt thread. Due to mailbox locking in place
    a deadlock situation may arise which may lead to mailbox timeout.
    Say at T1 - PF sends its own mailbox to AF and wait for response
    (PF is holding mailbox lock)
    
    T2 - VF mailbox/FLR interrupt comes and interrupt thread process it.
    Mailbox handling requires mailbox lock to send messages to AF, but lock
    is hold by PF. Interrupt thread spins at this point only and misses
    to ack the AFs response of PF messages which was sent at T1. Hence
    message sent at T1 gets timed out.
    
    As a solution to this scenario, creating a dedicated thread which
    does the VFs mailbox and FLR processing. When no message this thread
    waits on conditional variable and get waken up by interrupt thread
    on any mailbox/FLR interrupt reception.
    
    Fixes: 585bb3e538f9 ("common/cnxk: add VF support to base device class")
    Cc: stable@dpdk.org
    
    Signed-off-by: Harman Kalra <hkalra@marvell.com>

Testing Summary : 15 Case Done, 15 Successful, 0 Failures

Testbed #1: 6 Case Done, 6 Successful, 0 Failures 
	* Test result details:
	  +---------+---------------------+-------+
	  | suite   | case                | status|
	  +---------+---------------------+-------+
	  | pf_smoke| test_pf_jumbo_frames| passed|
	  | pf_smoke| test_pf_rss         | passed|
	  | pf_smoke| test_pf_tx_rx_queue | passed|
	  | vf_smoke| test_vf_jumbo_frames| passed|
	  | vf_smoke| test_vf_rss         | passed|
	  | vf_smoke| test_vf_tx_rx_queue | passed|
	  +---------+---------------------+-------+
	* Environment:
	  OS : Ubuntu 22.04.2 LTS       
	  Kernel : 5.15.0-60-generic         
	  GCC : 11.3.0-1ubuntu1~22.04        
	  NIC : Ethernet Controller E810-C for SFP         
	  Target : x86_64-native-linuxapp-gcc      

Testbed #2: 9 Case Done, 9 Successful, 0 Failures 
	* Test result details:
	  +-------------+---------------------------+-------+
	  | suite       | case                      | status|
	  +-------------+---------------------------+-------+
	  | asan_smoke  | test_rxtx_with_ASan_enable| passed|
	  | pf_smoke    | test_pf_jumbo_frames      | passed|
	  | pf_smoke    | test_pf_rss               | passed|
	  | pf_smoke    | test_pf_tx_rx_queue       | passed|
	  | vf_smoke    | test_vf_rss               | passed|
	  | vf_smoke    | test_vf_tx_rx_queue       | passed|
	  | vf_smoke    | test_vf_jumbo_frames      | n/a   |
	  | virtio_smoke| test_virtio_loopback      | passed|
	  | virtio_smoke| test_virtio_pvp           | passed|
	  +-------------+---------------------------+-------+
	* Environment:
	  OS : Ubuntu 22.04.2 LTS       
	  Kernel : 5.15.0-60-generic         
	  GCC : 11.3.0-1ubuntu1~22.04        
	  NIC : Ethernet Controller XL710 for 40GbE QSFP+         
	  Target : x86_64-native-linuxapp-gcc      

TestPlan:
	   pf_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/pf_smoke_test_plan.rst
	   vf_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/vf_smoke_test_plan.rst
	   asan_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/asan_smoke_test_plan.rst

TestSuite:
	   pf_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_pf_smoke.py
	   vf_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_vf_smoke.py
	   virtio_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_virtio_smoke.py
	   asan_smoke: http://git.dpdk.org/tools/dts/tree/tests/TestSuite_asan_smoke.py


DPDK STV team