Add an atomic queue test to the test-eventdev app, which is based on the
order queue test that exclusively uses atomic queues.
Signed-off-by: Luka Jankovic <luka.janko...@ericsson.com>
Tested-by: Pavan Nikhilesh <pbhagavat...@marvell.com>
---
app/test-eventdev/meson.build | 1 +
app/test-eventdev/test_atomic_queue.c | 234 +++
.../tools/img/eventdev_atomic_atq_test.svg | 1588 +++++++++++++++++
doc/guides/tools/testeventdev.rst | 92 +
4 files changed, 1915 insertions(+)
create mode 100644 app/test-eventdev/test_atomic_queue.c
create mode 100644 doc/guides/tools/img/eventdev_atomic_atq_test.svg
diff --git a/app/test-eventdev/meson.build b/app/test-eventdev/meson.build
index 926593b1a6..1f13e1700c 100644
--- a/app/test-eventdev/meson.build
+++ b/app/test-eventdev/meson.build
@@ -16,6 +16,7 @@ sources = files(
'test_order_common.c',
'test_order_queue.c',
'test_atomic_common.c',
+ 'test_atomic_queue.c',
'test_perf_atq.c',
'test_perf_common.c',
'test_perf_queue.c',
diff --git a/app/test-eventdev/test_atomic_queue.c
b/app/test-eventdev/test_atomic_queue.c
new file mode 100644
index 0000000000..c1a447bbac
--- /dev/null
+++ b/app/test-eventdev/test_atomic_queue.c
@@ -0,0 +1,234 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2025 Ericsson AB
+ */
+
+#include <stdio.h>
+#include <unistd.h>
+
+#include "test_atomic_common.h"
+
+#define NB_QUEUES 2
+#define NB_STAGES 2
+
+static rte_spinlock_t *atomic_locks;
+
+static inline void
+atomic_queue_process_stage_0(struct test_order *const t,
+ struct rte_event *const ev,
+ uint32_t nb_flows,
+ uint32_t port)
+{
+ const uint32_t flow = *order_mbuf_flow_id(t, ev->mbuf);
+
+ atomic_lock_verify(atomic_locks, 0, flow, nb_flows, t, port);
+
+ ev->queue_id = 1;
+ ev->op = RTE_EVENT_OP_FORWARD;
+ ev->sched_type = RTE_SCHED_TYPE_ATOMIC;
+ ev->event_type = RTE_EVENT_TYPE_CPU;
+
+ atomic_spinlock_unlock(atomic_locks, 0, flow, nb_flows);
+}
+
+static inline void
+atomic_queue_process_stage_1(struct test_order *const t,
+ struct rte_event *const ev,
+ uint32_t nb_flows,
+ rte_spinlock_t *atomic_locks,
+ uint32_t *const expected_flow_seq,
+ RTE_ATOMIC(uint64_t) * const outstand_pkts,
+ uint32_t port)
+{
+ const uint32_t flow = *order_mbuf_flow_id(t, ev->mbuf);
+ const uint32_t seq = *order_mbuf_seqn(t, ev->mbuf);
+
+ atomic_lock_verify(atomic_locks, 1, flow, nb_flows, t, port);
+
+ /* compare the seqn against expected value */
+ if (seq != expected_flow_seq[flow]) {
+ evt_err("flow=%x seqn mismatch got=%x expected=%x", flow, seq,
+ expected_flow_seq[flow]);
+ t->err = true;
+ }
+
+ expected_flow_seq[flow]++;
+ rte_pktmbuf_free(ev->mbuf);
+
+ rte_atomic_fetch_sub_explicit(outstand_pkts, 1,
rte_memory_order_relaxed);
+
+ ev->op = RTE_EVENT_OP_RELEASE;
+
+ atomic_spinlock_unlock(atomic_locks, 1, flow, nb_flows);
+}
+
+static int
+atomic_queue_worker_burst(void *arg, bool flow_id_cap, uint32_t max_burst)
+{
+ ORDER_WORKER_INIT;
+ struct rte_event ev[BURST_SIZE];
+ uint16_t i;
+
+ while (t->err == false) {
+
+ uint16_t const nb_rx = rte_event_dequeue_burst(dev_id, port,
ev, max_burst, 0);
+
+ if (nb_rx == 0) {
+ if (rte_atomic_load_explicit(outstand_pkts,
rte_memory_order_relaxed) <= 0)
+ break;
+ rte_pause();
+ continue;
+ }
+
+ for (i = 0; i < nb_rx; i++) {
+ if (!flow_id_cap)
+ order_flow_id_copy_from_mbuf(t, &ev[i]);
+
+ switch (ev[i].queue_id) {
+ case 0:
+ atomic_queue_process_stage_0(t, &ev[i],
nb_flows, port);
+ break;
+ case 1:
+ atomic_queue_process_stage_1(t, &ev[i],
nb_flows, atomic_locks,
+ expected_flow_seq,
outstand_pkts, port);
+ break;
+ default:
+ order_process_stage_invalid(t, &ev[i]);
+ break;
+ }
+ }
+
+ uint16_t total_enq = 0;
+
+ do {
+ total_enq += rte_event_enqueue_burst(
+ dev_id, port, ev + total_enq, nb_rx -
total_enq);
+ } while (total_enq < nb_rx);
+ }
+
+ return 0;
+}
+
+static int
+worker_wrapper(void *arg)
+{
+ struct worker_data *w = arg;
+ int max_burst = evt_has_burst_mode(w->dev_id) ? BURST_SIZE : 1;
+ const bool flow_id_cap = evt_has_flow_id(w->dev_id);
+
+ return atomic_queue_worker_burst(arg, flow_id_cap, max_burst);
+}
+
+static int
+atomic_queue_launch_lcores(struct evt_test *test, struct evt_options *opt)
+{
+ int ret = atomic_launch_lcores(test, opt, worker_wrapper);
+ rte_free(atomic_locks);
+ return ret;
+}
+
+static int
+atomic_queue_eventdev_setup(struct evt_test *test, struct evt_options *opt)
+{
+ int ret;
+
+ const uint8_t nb_workers = evt_nr_active_lcores(opt->wlcores);
+ /* number of active worker cores + 1 producer */
+ const uint8_t nb_ports = nb_workers + 1;
+
+ ret = evt_configure_eventdev(opt, NB_QUEUES, nb_ports);
+ if (ret) {
+ evt_err("failed to configure eventdev %d", opt->dev_id);
+ return ret;
+ }
+
+ /* q0 configuration */
+ struct rte_event_queue_conf q0_atomic_conf = {
+ .priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
+ .schedule_type = RTE_SCHED_TYPE_ATOMIC,
+ .nb_atomic_flows = opt->nb_flows,
+ .nb_atomic_order_sequences = opt->nb_flows,
+ };
+ ret = rte_event_queue_setup(opt->dev_id, 0, &q0_atomic_conf);
+ if (ret) {
+ evt_err("failed to setup queue0 eventdev %d err %d",
opt->dev_id, ret);
+ return ret;
+ }
+
+ /* q1 configuration */
+ struct rte_event_queue_conf q1_atomic_conf = {
+ .priority = RTE_EVENT_DEV_PRIORITY_NORMAL,
+ .schedule_type = RTE_SCHED_TYPE_ATOMIC,
+ .nb_atomic_flows = opt->nb_flows,
+ .nb_atomic_order_sequences = opt->nb_flows,
+ };
+ ret = rte_event_queue_setup(opt->dev_id, 1, &q1_atomic_conf);
+ if (ret) {
+ evt_err("failed to setup queue0 eventdev %d err %d",
opt->dev_id, ret);
+ return ret;
+ }
+
+ /* setup one port per worker, linking to all queues */
+ ret = order_event_dev_port_setup(test, opt, nb_workers, NB_QUEUES);
+ if (ret)
+ return ret;
+
+ if (!evt_has_distributed_sched(opt->dev_id)) {
+ uint32_t service_id;
+ rte_event_dev_service_id_get(opt->dev_id, &service_id);
+ ret = evt_service_setup(service_id);
+ if (ret) {
+ evt_err("No service lcore found to run event dev.");
+ return ret;
+ }
+ }
+
+ ret = rte_event_dev_start(opt->dev_id);
+ if (ret) {
+ evt_err("failed to start eventdev %d", opt->dev_id);
+ return ret;
+ }
+
+ atomic_locks = atomic_init_locks(NB_STAGES, opt->nb_flows);
+
+ return 0;
+}
+
+static void
+atomic_queue_opt_dump(struct evt_options *opt)
+{
+ order_opt_dump(opt);
+ evt_dump("nb_evdev_queues", "%d", NB_QUEUES);
+}
+
+static bool
+atomic_queue_capability_check(struct evt_options *opt)
+{
+ struct rte_event_dev_info dev_info;
+
+ rte_event_dev_info_get(opt->dev_id, &dev_info);
+ if (dev_info.max_event_queues < NB_QUEUES ||
+ dev_info.max_event_ports < order_nb_event_ports(opt)) {
+ evt_err("not enough eventdev queues=%d/%d or ports=%d/%d",
NB_QUEUES,
+ dev_info.max_event_queues,
order_nb_event_ports(opt),
+ dev_info.max_event_ports);
+ return false;
+ }
+
+ return true;
+}
+
+static const struct evt_test_ops atomic_queue = {
+ .cap_check = atomic_queue_capability_check,
+ .opt_check = order_opt_check,
+ .opt_dump = atomic_queue_opt_dump,
+ .test_setup = order_test_setup,
+ .mempool_setup = order_mempool_setup,
+ .eventdev_setup = atomic_queue_eventdev_setup,
+ .launch_lcores = atomic_queue_launch_lcores,
+ .eventdev_destroy = order_eventdev_destroy,
+ .mempool_destroy = order_mempool_destroy,
+ .test_result = order_test_result,
+ .test_destroy = order_test_destroy,
+};
+
+EVT_TEST_REGISTER(atomic_queue);
diff --git a/doc/guides/tools/img/eventdev_atomic_atq_test.svg
b/doc/guides/tools/img/eventdev_atomic_atq_test.svg
new file mode 100644
index 0000000000..f7956ecd6a
--- /dev/null
+++ b/doc/guides/tools/img/eventdev_atomic_atq_test.svg
@@ -0,0 +1,1588 @@
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diff --git a/doc/guides/tools/testeventdev.rst
b/doc/guides/tools/testeventdev.rst
index aaa0e5f24c..4f91e81240 100644
--- a/doc/guides/tools/testeventdev.rst
+++ b/doc/guides/tools/testeventdev.rst
@@ -55,6 +55,7 @@ The following are the application command-line options:
order_queue
order_atq
+ atomic_queue
perf_queue
perf_atq
pipeline_atq
@@ -326,6 +327,97 @@ Example command to run order queue test:
sudo <build_dir>/app/dpdk-test-eventdev -c 0x1f -s 0x10 --vdev=event_sw0 --
\
--test=order_queue --plcores 1 --wlcores 2,3
+ORDER_ATOMIC Test
+~~~~~~~~~~~~~~~~~
+
+This is a functional test is similar to the ORDER_QUEUE test, but differs in
two
+critical ways:
+
+#. Both queues (q0 and q1) are atomic. This makes it compatible with the
+ distributed software event device (dsw).
+#. Atomicity is verified using spinlocks for each combination of flow id and
+ queue id.
+
+.. _table_eventdev_atomic_queue_test:
+
+.. table:: Atomic queue test eventdev configuration.
+
+ +---+--------------+----------------+---------------------------+
+ | # | Items | Value | Comments |
+ | | | | |
+ +===+==============+================+===========================+
+ | 1 | nb_queues | 2 | q0(atomic), q1(atomic) |
+ | | | | |
+ +---+--------------+----------------+---------------------------+
+ | 2 | nb_producers | 1 | |
+ | | | | |
+ +---+--------------+----------------+---------------------------+
+ | 3 | nb_workers | >= 1 | |
+ | | | | |
+ +---+--------------+----------------+---------------------------+
+ | 4 | nb_ports | nb_workers + | Workers use port 0 to |
+ | | | 1 | port n-1.Producer uses |
+ | | | | port n. |
+ +---+--------------+----------------+---------------------------+
+
+.. _figure_eventdev_atomic_queue_test:
+
+.. figure:: img/eventdev_atomic_queue_test.*
+
+ atomic queue test operation.
+
+When an event is dequeued for processing, a spinlock is acquired for the
+the flow from which the event was dequeued. Once processing is complete,
+the lock is released. The test will fail if an attempt is made to take a lock
+that is already held. This indicates that multiple workers attempted to
+process the same flow at the same time, thereby violating atomicity.
+
+.. table:: Atomic queue test queue processing tasks.
+
+ +-----------+---------------------------------------------------+
+ | Queue ID | Processing Task |
+ | | |
+ +===========+===================================================+
+ | 0 | Update queue ID for event and re-enqueue. |
+ | | |
+ +-----------+---------------------------------------------------+
+ | 1 | Verify sequence number. |
+ | | |
+ +-----------+---------------------------------------------------+
+
+Application options
+^^^^^^^^^^^^^^^^^^^
+
+Supported application command line options are following::
+
+ --verbose
+ --dev
+ --test
+ --socket_id
+ --pool_sz
+ --plcores
+ --wlcores
+ --nb_flows
+ --nb_pkts
+ --worker_deq_depth
+ --deq_tmo_nsec
+
+Example
+^^^^^^^
+
+Example command to run with the software event device:
+
+.. code-block:: console
+
+ sudo <build_dir>/app/dpdk-test-eventdev -c 0x1f -s 0x10 --vdev=event_sw0 --
\
+ --test=atomic_queue --plcores 1 --wlcores 2,3
+
+Example command to run with the distributed software event device:
+
+.. code-block:: console
+
+ sudo <build_dir>/app/dpdk-test-eventdev -c 0x1f --vdev=event_dsw0 -- \
+ --test=atomic_queue --plcores 1 --wlcores 2,3,4
ORDER_ATQ Test
~~~~~~~~~~~~~~
--
2.34.1
