Hi Jay,
> -----Original Message-----
> From: Jayatheerthan, Jay <jay.jayatheert...@intel.com>
> Sent: 04 October 2021 22:49
> To: Kundapura, Ganapati <ganapati.kundap...@intel.com>;
> jerinjac...@gmail.com; dev@dpdk.org
> Subject: RE: [PATCH v4] eventdev/rx-adapter: fix segfault in queue conf get
>
> > -----Original Message-----
> > From: Kundapura, Ganapati <ganapati.kundap...@intel.com>
> > Sent: Friday, October 1, 2021 11:00 AM
> > To: jerinjac...@gmail.com; dev@dpdk.org
> > Cc: Jayatheerthan, Jay <jay.jayatheert...@intel.com>
> > Subject: [PATCH v4] eventdev/rx-adapter: fix segfault in queue conf
> > get
> >
> > rte_event_eth_rx_adapter_queue_conf_get() segfaults if called without
> > queue added to the Rx adapter.
> >
> > Added check to no queues in Rx adapter and error out on being called
> > with no queue in Rx adapter.
> >
> > Added test case to call queue conf get without queues in Rx adapter.
> >
> > Fixes: b36879759b7f3ce ("eventdev/rx_adapter: support Rx queue config
> > get")
> > Signed-off-by: Ganapati Kundapura <ganapati.kundap...@intel.com>
> >
> > ---
> > v4:
> > * Fixed checkpatch warning
> >
> > v3:
> > * Added fixes line
> >
> > v2:
> > * Corrected typo in the comment
> > ---
> >
> > diff --git a/app/test/test_event_eth_rx_adapter.c
> > b/app/test/test_event_eth_rx_adapter.c
> > index 13664a3..d0dc552 100644
> > --- a/app/test/test_event_eth_rx_adapter.c
> > +++ b/app/test/test_event_eth_rx_adapter.c
> > @@ -751,20 +751,48 @@ static int
> > adapter_queue_conf(void)
> > {
> > int err;
> > - struct rte_event_eth_rx_adapter_queue_conf queue_conf;
> > + struct rte_event_eth_rx_adapter_queue_conf queue_conf = {0};
> >
> > - err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> TEST_DEV_ID,
> > + /* Case 1: queue conf get without any queues in Rx adapter */
> > + err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> > + TEST_ETHDEV_ID,
> > + 0, &queue_conf);
> > + TEST_ASSERT(err == -EINVAL, "Expected -EINVAL got %d", err);
> > +
> > + /* Add queue to Rx adapter */
> > + queue_conf.ev.queue_id = 0;
> > + queue_conf.ev.sched_type = RTE_SCHED_TYPE_ATOMIC;
> > + queue_conf.ev.priority = RTE_EVENT_DEV_PRIORITY_NORMAL;
> > +
> > + err = rte_event_eth_rx_adapter_queue_add(TEST_INST_ID,
> > + TEST_ETHDEV_ID,
> > + 0, &queue_conf);
> > + TEST_ASSERT(err == 0, "Expected 0 got %d", err);
> > +
> > + /* Case 2: queue conf get with queue added to Rx adapter */
> > + err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> > + TEST_ETHDEV_ID,
> > 0, &queue_conf);
> > TEST_ASSERT(err == 0, "Expected 0 got %d", err);
> >
> > - err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> TEST_DEV_ID,
> > + /* Case 3: queue conf get with invalid rx queue id */
> > + err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> > + TEST_ETHDEV_ID,
> > -1, &queue_conf);
>
> rx_queue_id param is uint16_t. Would using non-configured queue id (for
> e.g. rx_queue_id = 2) suffice instead of using -1 ?
>
When -1 is promoted/demoted to uint16_t, it'll be converted to large value i.e
UINT_MAX and guaranteed
to be invalid rx queue id and it's future proof.
In case, some queues are added in that test case in future, this invalid
rx_queue_id also needs to be updated.
Yes, for this case rx_queue_id=2 can be used, but it's not future proof.
> > TEST_ASSERT(err == -EINVAL, "Expected -EINVAL got %d", err);
> >
> > - err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> TEST_DEV_ID,
> > + /* Case 4: queue conf get with NULL queue conf struct */
> > + err = rte_event_eth_rx_adapter_queue_conf_get(TEST_INST_ID,
> > + TEST_ETHDEV_ID,
> > 0, NULL);
> > TEST_ASSERT(err == -EINVAL, "Expected -EINVAL got %d", err);
> >
> > + /* Delete queue from the Rx adapter */
> > + err = rte_event_eth_rx_adapter_queue_del(TEST_INST_ID,
> > + TEST_ETHDEV_ID,
> > + 0);
> > + TEST_ASSERT(err == 0, "Expected 0 got %d", err);
> > +
> > return TEST_SUCCESS;
> > }
> >
> > diff --git a/lib/eventdev/rte_event_eth_rx_adapter.c
> > b/lib/eventdev/rte_event_eth_rx_adapter.c
> > index 10491ca..2a84490 100644
> > --- a/lib/eventdev/rte_event_eth_rx_adapter.c
> > +++ b/lib/eventdev/rte_event_eth_rx_adapter.c
> > @@ -2844,12 +2844,13 @@
> rte_event_eth_rx_adapter_queue_conf_get(uint8_t id,
> > return -EINVAL;
> >
> > dev_info = &rx_adapter->eth_devices[eth_dev_id];
> > - queue_info = &dev_info->rx_queue[rx_queue_id];
> > - if (!queue_info->queue_enabled) {
> > + if (dev_info->rx_queue == NULL ||
> > + !dev_info->rx_queue[rx_queue_id].queue_enabled) {
> > RTE_EDEV_LOG_ERR("Rx queue %u not added",
> rx_queue_id);
> > return -EINVAL;
> > }
> >
> > + queue_info = &dev_info->rx_queue[rx_queue_id];
> > qi_ev = (struct rte_event *)&queue_info->event;
> >
> > memset(queue_conf, 0, sizeof(*queue_conf));
> > --
> > 2.6.4
