Test-Label: intel-Testing Test-Status: SUCCESS _Testing PASS_ DPDK git repo: dpdk commit 5bfc0e78e1be7490b48850e9601217f97f0422c2 Author: Wathsala Vithanage Date: Tue Nov 11 18:16:39 2025 +0000 ring: establish a safe partial order in rts-ring Enforce a safe partial order by making the CAS and the preceding head load use release and acquire semantics. This creates a pairwise happens-before relationship between threads of the same kind (i.e. between consumers or between producers). Combine the two load-acquire operations of ht->head.raw, which were previously split across the two paths of a conditional branch, into __rte_ring_rts_head_wait. This simplifies the branching logic and makes the synchronization behavior easier to understand. Add comments to explain synchronizes with edges in detail. Fixes: e6ba4731c0f3a ("ring: introduce RTS ring mode") Cc: stable@dpdk.org Signed-off-by: Wathsala Vithanage Signed-off-by: Ola Liljedahl 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 : 6.8.0-87-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| +-------------+---------------------------+-------+ 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| +-------------+---------------------------+-------+ DPDK STV team