|SUCCESS|dpdk|062b389428| Intel-Testing

[sys_stv at intel.com]

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

DPDK git repo: dpdk
commit a7565d8747d492f632c9fb82ea676add76ac64ad
Author: Md Rayhanul Islam <r97yhan at gmail.com>
Date:   Fri Oct 2 16:09:27 2026 -0400

    net/e1000: support non-coherent DMA
    
    On non-coherent systems the NIC reads stale descriptors and packet data.
    Seen on a BCM2711 Compute Module 4 with an Intel I210: transmits never
    completed and received data went to address zero.
    
    Take the DMA context from the bus at probe, keep it in the shared adapter
    data so secondary processes see it, and install separate TX and RX bursts
    for such devices.  They translate every address against the device window
    and synchronize buffers and descriptors.  Both come from one inlined
    template with a constant flag, so the coherent datapath is unchanged.
    
    Four descriptors share a cache line.  Invalidate a line before writing
    into it, so cleaning it afterwards keeps the Done bits the NIC wrote on
    the neighbours; without that a burst loses about three packets of every
    sixteen.  Completion is the Done bit, never the head register, which
    advances when a descriptor is fetched rather than when its data has been
    read.  Receive descriptors are refilled a whole line at a time, and
    receive buffers are cleaned before handover and rejected unless they are
    direct, cache-line aligned and inside the window.
    
    The em driver, which shares net/e1000 with igb, does not set
    RTE_PCI_DRV_DMA_NONCOHERENT, so on non-coherent systems the PCI
    bus does not probe em devices; they fail cleanly instead of
    running with stale DMA.
    
    Tested between two Compute Module 4 boards with Intel I210s: testpmd
    txonly holds 1.42 Mpps at 1 GbE line rate, and a 512 MB transfer with
    DPDK at both ends arrives byte-identical.
    
    Signed-off-by: Md Rayhanul Islam <r97yhan at gmail.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 24.04.4 LTS       
Kernel : 6.8.0-71-generic         
GCC : 13.3.0-6ubuntu2~24.04.1        
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 24.04.4 LTS       
Kernel : 6.8.0-87-generic         
GCC : 13.3.0-6ubuntu2~24.04.1        
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