|SUCCESS|dpdk-next-baseband|bf0bbe03b6| Intel-Testing

[sys_stv at intel.com]

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

DPDK git repo: dpdk-next-baseband
commit bf0bbe03b6db90478216961fd5cfff984a8c5391
Author: Kevin Traynor <ktraynor at redhat.com>
Date:   Tue Mar 3 18:58:18 2026 +0000

    net/mlx5: check DevX disconnect/error interrupt events
    
    A busy-loop may occur when there are disconnect/error events
    such as EPOLLERR, EPOLLHUP or EPOLLRDHUP on Linux for the devx
    interrupt fd.
    
    This may happen if the interrupt fd is deleted, if the device
    is unbound from mlx5_core kernel driver or if the device is
    removed by the mlx5 kernel driver as part of LAG setup.
    
    As the interrupt is not removed or condition reset, it causes
    an interrupt processing busy-loop, which leads to the dpdk-intr
    thread going to 100% CPU.
    
    e.g.
    epoll_wait
       (6, [{events=EPOLLIN|EPOLLRDHUP, data={u32=28, u64=28}}], 8, -1) = 1
    read(28, 0x7f1f5c7fc2f0, 40)
       = -1 EAGAIN (Resource temporarily unavailable)
    epoll_wait
       (6, [{events=EPOLLIN|EPOLLRDHUP, data={u32=28, u64=28}}], 8, -1) = 1
    read(28, 0x7f1f5c7fc2f0, 40)
       = -1 EAGAIN (Resource temporarily unavailable)
    
    In order to prevent a busy-loop use the eal API
    rte_intr_active_events_flags() to get the interrupt events and check
    for disconnect/error.
    
    If there is a disconnect/error event, unregister the devx callback.
    
    Bugzilla ID: 1873
    Fixes: f15db67df09c ("net/mlx5: accelerate DV flow counter query")
    Cc: stable at dpdk.org
    
    Signed-off-by: Kevin Traynor <ktraynor at redhat.com>
    Acked-by: Stephen Hemminger <stephen at networkplumber.org>
    Acked-by: Viacheslav Ovsiienko <viacheslavo at nvidia.com>

Testing Summary : 18 Case Done, 18 Successful, 0 Failures      

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
	virtio_smoke: http://git.dpdk.org/tools/dts/tree/test_plans/virtio_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


OS : Ubuntu 24.04.3 LTS       
Kernel : 6.8.0-71-generic         
GCC : 13.3.0-6ubuntu2~24.04        
NIC : Ethernet Controller XL710 for 40GbE QSFP+         
Target : x86_64-native-linuxapp-gcc      

	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|
	+-------------+---------------------------+-------+


OS : Ubuntu 24.04.3 LTS       
Kernel : 6.8.0-87-generic         
GCC : 13.3.0-6ubuntu2~24.04        
NIC : Ethernet Controller E810-C for SFP         
Target : x86_64-native-linuxapp-gcc      

	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_jumbo_frames      | passed|
	| vf_smoke    | test_vf_rss               | passed|
	| vf_smoke    | test_vf_tx_rx_queue       | passed|
	| virtio_smoke| test_virtio_loopback      | passed|
	| virtio_smoke| test_virtio_pvp           | passed|
	+-------------+---------------------------+-------+


DPDK STV team