Re: [dpdk-dev] [PATCH v9 4/8] eventdev: add Rx adapter event vector support

["Jayatheerthan, Jay" <jay.jayatheerthan@intel.com>]

> -----Original Message-----
> From: Pavan Nikhilesh Bhagavatula <pbhagavatula@marvell.com>
> Sent: Wednesday, March 31, 2021 12:10 PM
> To: Jayatheerthan, Jay <jay.jayatheerthan@intel.com>; Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Carrillo, Erik G
> <erik.g.carrillo@intel.com>; Gujjar, Abhinandan S <abhinandan.gujjar@intel.com>; McDaniel, Timothy
> <timothy.mcdaniel@intel.com>; hemant.agrawal@nxp.com; Van Haaren, Harry <harry.van.haaren@intel.com>; mattias.ronnblom
> <mattias.ronnblom@ericsson.com>; Ma, Liang J <liang.j.ma@intel.com>
> Cc: dev@dpdk.org
> Subject: RE: [dpdk-dev] [PATCH v9 4/8] eventdev: add Rx adapter event vector support
> 
> >> -----Original Message-----
> >> From: pbhagavatula@marvell.com <pbhagavatula@marvell.com>
> >> Sent: Tuesday, March 30, 2021 1:52 PM
> >> To: jerinj@marvell.com; Jayatheerthan, Jay
> ><jay.jayatheerthan@intel.com>; Carrillo, Erik G
> ><erik.g.carrillo@intel.com>; Gujjar,
> >> Abhinandan S <abhinandan.gujjar@intel.com>; McDaniel, Timothy
> ><timothy.mcdaniel@intel.com>; hemant.agrawal@nxp.com; Van
> >> Haaren, Harry <harry.van.haaren@intel.com>; mattias.ronnblom
> ><mattias.ronnblom@ericsson.com>; Ma, Liang J
> >> <liang.j.ma@intel.com>
> >> Cc: dev@dpdk.org; Pavan Nikhilesh <pbhagavatula@marvell.com>
> >> Subject: [dpdk-dev] [PATCH v9 4/8] eventdev: add Rx adapter event
> >vector support
> >>
> >> From: Pavan Nikhilesh <pbhagavatula@marvell.com>
> >>
> >> Add event vector support for event eth Rx adapter, the
> >implementation
> >> creates vector flows based on port and queue identifier of the
> >received
> >> mbufs.
> >> The flow id for SW Rx event vectorization will use 12-bits of queue
> >> identifier and 8-bits port identifier when custom flow id is not set
> >> for simplicity.
> >>
> >> Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
> >> ---
> >>  .../prog_guide/event_ethernet_rx_adapter.rst  |  11 +
> >>  lib/librte_eventdev/eventdev_pmd.h            |   7 +-
> >>  .../rte_event_eth_rx_adapter.c                | 278 ++++++++++++++++--
> >>  lib/librte_eventdev/rte_eventdev.c            |   6 +-
> >>  4 files changed, 278 insertions(+), 24 deletions(-)
> >>
> >> diff --git a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> >b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> >> index 5eefef355..06fa864fa 100644
> >> --- a/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> >> +++ b/doc/guides/prog_guide/event_ethernet_rx_adapter.rst
> >> @@ -224,3 +224,14 @@ A loop processing ``rte_event_vector``
> >containing mbufs is shown below.
> >>          case ...
> >>          ...
> >>          }
> >> +
> >> +Rx event vectorization for SW Rx adapter
> >> +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> >> +
> >> +For SW based event vectorization, i.e., when the
> >> +``RTE_EVENT_ETH_RX_ADAPTER_CAP_INTERNAL_PORT`` is not set
> >in the adapter's
> >> +capabilities flags for a particular ethernet device, the service
> >function
> >> +creates a single event vector flow for all the mbufs arriving on the
> >given
> >> +Rx queue.
> >> +The 20-bit event flow identifier is set to 12-bits of Rx queue identifier
> >> +and 8-bits of ethernet device identifier.

Could you add a format like below ?

19        12,11                 0
+-----------+--------------+
| port_id | queue_id |
+-----------+--------------+

> >> diff --git a/lib/librte_eventdev/eventdev_pmd.h
> >b/lib/librte_eventdev/eventdev_pmd.h
> >> index 9297f1433..0f724ac85 100644
> >> --- a/lib/librte_eventdev/eventdev_pmd.h
> >> +++ b/lib/librte_eventdev/eventdev_pmd.h
> >> @@ -69,9 +69,10 @@ extern "C" {
> >>  	} \
> >>  } while (0)
> >>
> >> -#define RTE_EVENT_ETH_RX_ADAPTER_SW_CAP \
> >> -
> >	((RTE_EVENT_ETH_RX_ADAPTER_CAP_OVERRIDE_FLOW_ID) |
> >\
> >> -
> >	(RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ))
> >> +#define RTE_EVENT_ETH_RX_ADAPTER_SW_CAP
> >\
> >> +	((RTE_EVENT_ETH_RX_ADAPTER_CAP_OVERRIDE_FLOW_ID) |
> >\
> >> +	 (RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ) |
> >\
> >> +	 (RTE_EVENT_ETH_RX_ADAPTER_CAP_EVENT_VECTOR))
> >>
> >>  #define RTE_EVENT_CRYPTO_ADAPTER_SW_CAP \
> >>
> >	RTE_EVENT_CRYPTO_ADAPTER_CAP_SESSION_PRIVATE_DATA
> >> diff --git a/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> >b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> >> index ac8ba5bf0..e273b3acf 100644
> >> --- a/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> >> +++ b/lib/librte_eventdev/rte_event_eth_rx_adapter.c
> >> @@ -26,6 +26,10 @@
> >>  #define BATCH_SIZE		32
> >>  #define BLOCK_CNT_THRESHOLD	10
> >>  #define ETH_EVENT_BUFFER_SIZE	(4*BATCH_SIZE)
> >> +#define MAX_VECTOR_SIZE		1024
> >> +#define MIN_VECTOR_SIZE		4
> >> +#define MAX_VECTOR_NS		1E9
> >> +#define MIN_VECTOR_NS		1E5
> >>
> >>  #define ETH_RX_ADAPTER_SERVICE_NAME_LEN	32
> >>  #define ETH_RX_ADAPTER_MEM_NAME_LEN	32
> >> @@ -59,6 +63,20 @@ struct eth_rx_poll_entry {
> >>  	uint16_t eth_rx_qid;
> >>  };
> >>
> >> +struct eth_rx_vector_data {
> >> +	TAILQ_ENTRY(eth_rx_vector_data) next;
> >> +	uint16_t port;
> >> +	uint16_t queue;
> >> +	uint16_t max_vector_count;
> >> +	uint64_t event;
> >> +	uint64_t ts;
> >> +	uint64_t vector_timeout_ticks;
> >> +	struct rte_mempool *vector_pool;
> >> +	struct rte_event_vector *vector_ev;
> >> +} __rte_cache_aligned;
> >> +
> >> +TAILQ_HEAD(eth_rx_vector_data_list, eth_rx_vector_data);
> >> +
> >>  /* Instance per adapter */
> >>  struct rte_eth_event_enqueue_buffer {
> >>  	/* Count of events in this buffer */
> >> @@ -92,6 +110,14 @@ struct rte_event_eth_rx_adapter {
> >>  	uint32_t wrr_pos;
> >>  	/* Event burst buffer */
> >>  	struct rte_eth_event_enqueue_buffer event_enqueue_buffer;
> >> +	/* Vector enable flag */
> >> +	uint8_t ena_vector;
> >> +	/* Timestamp of previous vector expiry list traversal */
> >> +	uint64_t prev_expiry_ts;
> >> +	/* Minimum ticks to wait before traversing expiry list */
> >> +	uint64_t vector_tmo_ticks;
> >> +	/* vector list */
> >> +	struct eth_rx_vector_data_list vector_list;
> >>  	/* Per adapter stats */
> >>  	struct rte_event_eth_rx_adapter_stats stats;
> >>  	/* Block count, counts up to BLOCK_CNT_THRESHOLD */
> >> @@ -198,9 +224,11 @@ struct eth_device_info {
> >>  struct eth_rx_queue_info {
> >>  	int queue_enabled;	/* True if added */
> >>  	int intr_enabled;
> >> +	uint8_t ena_vector;
> >>  	uint16_t wt;		/* Polling weight */
> >>  	uint32_t flow_id_mask;	/* Set to ~0 if app provides flow id else
> >0 */
> >>  	uint64_t event;
> >> +	struct eth_rx_vector_data vector_data;
> >>  };
> >>
> >>  static struct rte_event_eth_rx_adapter **event_eth_rx_adapter;
> >> @@ -722,6 +750,9 @@ rxa_flush_event_buffer(struct
> >rte_event_eth_rx_adapter *rx_adapter)
> >>  	    &rx_adapter->event_enqueue_buffer;
> >>  	struct rte_event_eth_rx_adapter_stats *stats = &rx_adapter-
> >>stats;
> >>
> >> +	if (!buf->count)
> >> +		return 0;
> >> +
> >>  	uint16_t n = rte_event_enqueue_new_burst(rx_adapter-
> >>eventdev_id,
> >>  					rx_adapter->event_port_id,
> >>  					buf->events,
> >> @@ -742,6 +773,77 @@ rxa_flush_event_buffer(struct
> >rte_event_eth_rx_adapter *rx_adapter)
> >>  	return n;
> >>  }
> >>
> >> +static inline void
> >> +rxa_init_vector(struct rte_event_eth_rx_adapter *rx_adapter,
> >> +		struct eth_rx_vector_data *vec)
> >> +{
> >> +	vec->vector_ev->nb_elem = 0;
> >> +	vec->vector_ev->port = vec->port;
> >> +	vec->vector_ev->queue = vec->queue;
> >> +	vec->vector_ev->attr_valid = true;
> >> +	TAILQ_INSERT_TAIL(&rx_adapter->vector_list, vec, next);
> >> +}
> >> +
> >> +static inline uint16_t
> >> +rxa_create_event_vector(struct rte_event_eth_rx_adapter
> >*rx_adapter,
> >> +			struct eth_rx_queue_info *queue_info,
> >> +			struct rte_eth_event_enqueue_buffer *buf,
> >> +			struct rte_mbuf **mbufs, uint16_t num)
> >> +{
> >> +	struct rte_event *ev = &buf->events[buf->count];
> >> +	struct eth_rx_vector_data *vec;
> >> +	uint16_t filled, space, sz;
> >> +
> >> +	filled = 0;
> >> +	vec = &queue_info->vector_data;
> >> +
> >> +	if (vec->vector_ev == NULL) {
> >> +		if (rte_mempool_get(vec->vector_pool,
> >> +				    (void **)&vec->vector_ev) < 0) {
> >> +			rte_pktmbuf_free_bulk(mbufs, num);
> >> +			return 0;
> >> +		}
> >> +		rxa_init_vector(rx_adapter, vec);
> >> +	}
> >> +	while (num) {
> >> +		if (vec->vector_ev->nb_elem == vec-
> >>max_vector_count) {
> >> +			/* Event ready. */
> >> +			ev->event = vec->event;
> >> +			ev->vec = vec->vector_ev;
> >> +			ev++;
> >> +			filled++;
> >> +			vec->vector_ev = NULL;
> >> +			TAILQ_REMOVE(&rx_adapter->vector_list, vec,
> >next);
> >> +			if (rte_mempool_get(vec->vector_pool,
> >> +					    (void **)&vec->vector_ev) <
> >0) {
> >> +				rte_pktmbuf_free_bulk(mbufs, num);
> >> +				return 0;
> >> +			}
> >> +			rxa_init_vector(rx_adapter, vec);
> >> +		}
> >> +
> >> +		space = vec->max_vector_count - vec->vector_ev-
> >>nb_elem;
> >> +		sz = num > space ? space : num;
> >> +		memcpy(vec->vector_ev->mbufs + vec->vector_ev-
> >>nb_elem, mbufs,
> >> +		       sizeof(void *) * sz);
> >> +		vec->vector_ev->nb_elem += sz;
> >> +		num -= sz;
> >> +		mbufs += sz;
> >> +		vec->ts = rte_rdtsc();
> >> +	}
> >> +
> >> +	if (vec->vector_ev->nb_elem == vec->max_vector_count) {
> >> +		ev->event = vec->event;
> >> +		ev->vec = vec->vector_ev;
> >> +		ev++;
> >> +		filled++;
> >> +		vec->vector_ev = NULL;
> >> +		TAILQ_REMOVE(&rx_adapter->vector_list, vec, next);
> >> +	}
> >> +
> >> +	return filled;
> >> +}
> >> +
> >>  static inline void
> >>  rxa_buffer_mbufs(struct rte_event_eth_rx_adapter *rx_adapter,
> >>  		uint16_t eth_dev_id,
> >> @@ -766,29 +868,33 @@ rxa_buffer_mbufs(struct
> >rte_event_eth_rx_adapter *rx_adapter,
> >>  	uint16_t nb_cb;
> >>  	uint16_t dropped;
> >>
> >> -	/* 0xffff ffff if PKT_RX_RSS_HASH is set, otherwise 0 */
> >> -	rss_mask = ~(((m->ol_flags & PKT_RX_RSS_HASH) != 0) - 1);
> >> -	do_rss = !rss_mask && !eth_rx_queue_info->flow_id_mask;
> >> -
> >> -	for (i = 0; i < num; i++) {
> >> -		m = mbufs[i];
> >> -
> >> -		rss = do_rss ?
> >> -			rxa_do_softrss(m, rx_adapter->rss_key_be) :
> >> -			m->hash.rss;
> >> -		ev->event = event;
> >> -		ev->flow_id = (rss & ~flow_id_mask) |
> >> -				(ev->flow_id & flow_id_mask);
> >> -		ev->mbuf = m;
> >> -		ev++;
> >> +	if (!eth_rx_queue_info->ena_vector) {
> >> +		/* 0xffff ffff if PKT_RX_RSS_HASH is set, otherwise 0 */
> >> +		rss_mask = ~(((m->ol_flags & PKT_RX_RSS_HASH) != 0) -
> >1);
> >> +		do_rss = !rss_mask && !eth_rx_queue_info-
> >>flow_id_mask;
> >> +		for (i = 0; i < num; i++) {
> >> +			m = mbufs[i];
> >> +
> >> +			rss = do_rss ? rxa_do_softrss(m, rx_adapter-
> >>rss_key_be)
> >> +				     : m->hash.rss;
> >> +			ev->event = event;
> >> +			ev->flow_id = (rss & ~flow_id_mask) |
> >> +				      (ev->flow_id & flow_id_mask);
> >> +			ev->mbuf = m;
> >> +			ev++;
> >> +		}
> >> +	} else {
> >> +		num = rxa_create_event_vector(rx_adapter,
> >eth_rx_queue_info,
> >> +					      buf, mbufs, num);
> >>  	}
> >>
> >> -	if (dev_info->cb_fn) {
> >> +	if (num && dev_info->cb_fn) {
> >>
> >>  		dropped = 0;
> >>  		nb_cb = dev_info->cb_fn(eth_dev_id, rx_queue_id,
> >> -					ETH_EVENT_BUFFER_SIZE, buf-
> >>count, ev,
> >> -					num, dev_info->cb_arg,
> >&dropped);
> >> +					ETH_EVENT_BUFFER_SIZE, buf-
> >>count,
> >> +					&buf->events[buf->count],
> >num,
> >> +					dev_info->cb_arg, &dropped);
> >>  		if (unlikely(nb_cb > num))
> >>  			RTE_EDEV_LOG_ERR("Rx CB returned %d (> %d)
> >events",
> >>  				nb_cb, num);
> >> @@ -1124,6 +1230,30 @@ rxa_poll(struct rte_event_eth_rx_adapter
> >*rx_adapter)
> >>  	return nb_rx;
> >>  }
> >>
> >> +static void
> >> +rxa_vector_expire(struct eth_rx_vector_data *vec, void *arg)
> >> +{
> >> +	struct rte_event_eth_rx_adapter *rx_adapter = arg;
> >> +	struct rte_eth_event_enqueue_buffer *buf =
> >> +		&rx_adapter->event_enqueue_buffer;
> >> +	struct rte_event *ev;
> >> +
> >> +	if (buf->count)
> >> +		rxa_flush_event_buffer(rx_adapter);
> >> +
> >> +	if (vec->vector_ev->nb_elem == 0)
> >> +		return;
> >> +	ev = &buf->events[buf->count];
> >> +
> >> +	/* Event ready. */
> >> +	ev->event = vec->event;
> >> +	ev->vec = vec->vector_ev;
> >> +	buf->count++;
> >> +
> >> +	vec->vector_ev = NULL;
> >> +	vec->ts = 0;
> >> +}
> >> +
> >>  static int
> >>  rxa_service_func(void *args)
> >>  {
> >> @@ -1137,6 +1267,24 @@ rxa_service_func(void *args)
> >>  		return 0;
> >>  	}
> >>
> >> +	if (rx_adapter->ena_vector) {
> >> +		if ((rte_rdtsc() - rx_adapter->prev_expiry_ts) >=
> >> +		    rx_adapter->vector_tmo_ticks) {
> >> +			struct eth_rx_vector_data *vec;
> >> +
> >> +			TAILQ_FOREACH(vec, &rx_adapter->vector_list,
> >next) {
> >> +				uint64_t elapsed_time = rte_rdtsc() -
> >vec->ts;
> >> +
> >> +				if (elapsed_time >= vec-
> >>vector_timeout_ticks) {
> >> +					rxa_vector_expire(vec,
> >rx_adapter);
> >> +					TAILQ_REMOVE(&rx_adapter-
> >>vector_list,
> >> +						     vec, next);
> >> +				}
> >> +			}
> >> +			rx_adapter->prev_expiry_ts = rte_rdtsc();
> >> +		}
> >> +	}
> >> +
> >>  	stats = &rx_adapter->stats;
> >>  	stats->rx_packets += rxa_intr_ring_dequeue(rx_adapter);
> >>  	stats->rx_packets += rxa_poll(rx_adapter);
> >> @@ -1640,11 +1788,35 @@ rxa_update_queue(struct
> >rte_event_eth_rx_adapter *rx_adapter,
> >>  	}
> >>  }
> >>
> >> +static void
> >> +rxa_set_vector_data(struct eth_rx_queue_info *queue_info,
> >uint16_t vector_count,
> >> +		    uint64_t vector_ns, struct rte_mempool *mp, int32_t
> >qid,
> >> +		    uint16_t port_id)
> >> +{
> >> +#define NSEC2TICK(__ns, __freq) (((__ns) * (__freq)) / 1E9)
> >> +	struct eth_rx_vector_data *vector_data;
> >> +	uint32_t flow_id;
> >> +
> >> +	vector_data = &queue_info->vector_data;
> >> +	vector_data->max_vector_count = vector_count;
> >> +	vector_data->port = port_id;
> >> +	vector_data->queue = qid;
> >> +	vector_data->vector_pool = mp;
> >> +	vector_data->vector_timeout_ticks =
> >> +		NSEC2TICK(vector_ns, rte_get_timer_hz());
> >> +	vector_data->ts = 0;
> >> +	flow_id = queue_info->event & 0xFFFFF;
> >> +	flow_id =
> >> +		flow_id == 0 ? (qid & 0xFFF) | (port_id & 0xFF) << 12 :
> >flow_id;
> >> +	vector_data->event = (queue_info->event & ~0xFFFFF) |
> >flow_id;
> >> +}
> >> +
> >>  static void
> >>  rxa_sw_del(struct rte_event_eth_rx_adapter *rx_adapter,
> >>  	struct eth_device_info *dev_info,
> >>  	int32_t rx_queue_id)
> >>  {
> >> +	struct eth_rx_vector_data *vec;
> >>  	int pollq;
> >>  	int intrq;
> >>  	int sintrq;
> >> @@ -1663,6 +1835,14 @@ rxa_sw_del(struct
> >rte_event_eth_rx_adapter *rx_adapter,
> >>  		return;
> >>  	}
> >>
> >> +	/* Push all the partial event vectors to event device. */
> >> +	TAILQ_FOREACH(vec, &rx_adapter->vector_list, next) {
> >> +		if (vec->queue != rx_queue_id)
> >> +			continue;
> >> +		rxa_vector_expire(vec, rx_adapter);
> >> +		TAILQ_REMOVE(&rx_adapter->vector_list, vec, next);
> >> +	}
> >> +
> >
> >We are doing packet related activity (rxa_flush_event_buffer()) outside
> >of rxa_service_func() although it wouldn't be running since queue del
> >code has the lock. It would also be done in the context of a control
> >thread. I don't know if there is a precedence for this. What do you think
> >of just freeing the vector data and mbufs ?
> 
> Since we are just enqueueing to event device it should work fine.
> The teardown sequence for event devices is to quiesce all producers first
> and finally the event device.
> This will make sure that the packets get handled properly with the stop
> callback registered through `rte_event_dev_stop_flush_callback_register`.
> 
> >
> >>  	pollq = rxa_polled_queue(dev_info, rx_queue_id);
> >>  	intrq = rxa_intr_queue(dev_info, rx_queue_id);
> >>  	sintrq = rxa_shared_intr(dev_info, rx_queue_id);
> >> @@ -1741,6 +1921,42 @@ rxa_add_queue(struct
> >rte_event_eth_rx_adapter *rx_adapter,
> >>  	}
> >>  }
> >>
> >> +static void
> >> +rxa_sw_event_vector_configure(
> >> +	struct rte_event_eth_rx_adapter *rx_adapter, uint16_t
> >eth_dev_id,
> >> +	int rx_queue_id,
> >> +	const struct rte_event_eth_rx_adapter_event_vector_config
> >*config)
> >> +{
> >> +	struct eth_device_info *dev_info = &rx_adapter-
> >>eth_devices[eth_dev_id];
> >> +	struct eth_rx_queue_info *queue_info;
> >> +	struct rte_event *qi_ev;
> >> +
> >> +	if (rx_queue_id == -1) {
> >> +		uint16_t nb_rx_queues;
> >> +		uint16_t i;
> >> +
> >> +		nb_rx_queues = dev_info->dev->data->nb_rx_queues;
> >> +		for (i = 0; i < nb_rx_queues; i++)
> >> +			rxa_sw_event_vector_configure(rx_adapter,
> >eth_dev_id, i,
> >> +						      config);
> >> +		return;
> >> +	}
> >> +
> >> +	queue_info = &dev_info->rx_queue[rx_queue_id];
> >> +	qi_ev = (struct rte_event *)&queue_info->event;
> >> +	queue_info->ena_vector = 1;
> >> +	qi_ev->event_type =
> >RTE_EVENT_TYPE_ETH_RX_ADAPTER_VECTOR;
> >> +	rxa_set_vector_data(queue_info, config->vector_sz,
> >> +			    config->vector_timeout_ns, config-
> >>vector_mp,
> >> +			    rx_queue_id, dev_info->dev->data->port_id);
> >> +	rx_adapter->ena_vector = 1;
> >> +	rx_adapter->vector_tmo_ticks =
> >> +		rx_adapter->vector_tmo_ticks ?
> >> +			      RTE_MIN(config->vector_timeout_ns >> 1,
> >> +				rx_adapter->vector_tmo_ticks) :
> >> +			      config->vector_timeout_ns >> 1;
> >> +}
> >> +
> >>  static int rxa_sw_add(struct rte_event_eth_rx_adapter *rx_adapter,
> >>  		uint16_t eth_dev_id,
> >>  		int rx_queue_id,
> >> @@ -1967,6 +2183,7 @@
> >rte_event_eth_rx_adapter_create_ext(uint8_t id, uint8_t dev_id,
> >>  	rx_adapter->conf_cb = conf_cb;
> >>  	rx_adapter->conf_arg = conf_arg;
> >>  	rx_adapter->id = id;
> >> +	TAILQ_INIT(&rx_adapter->vector_list);
> >>  	strcpy(rx_adapter->mem_name, mem_name);
> >>  	rx_adapter->eth_devices = rte_zmalloc_socket(rx_adapter-
> >>mem_name,
> >>  					RTE_MAX_ETHPORTS *
> >> @@ -2081,6 +2298,15 @@
> >rte_event_eth_rx_adapter_queue_add(uint8_t id,
> >>  		return -EINVAL;
> >>  	}
> >>
> >> +	if ((cap &
> >RTE_EVENT_ETH_RX_ADAPTER_CAP_EVENT_VECTOR) == 0 &&
> >> +	    (queue_conf->rx_queue_flags &
> >> +	     RTE_EVENT_ETH_RX_ADAPTER_QUEUE_EVENT_VECTOR)) {
> >> +		RTE_EDEV_LOG_ERR("Event vectorization is not
> >supported,"
> >> +				 " eth port: %" PRIu16 " adapter id: %"
> >PRIu8,
> >> +				 eth_dev_id, id);
> >> +		return -EINVAL;
> >> +	}
> >> +
> >>  	if ((cap &
> >RTE_EVENT_ETH_RX_ADAPTER_CAP_MULTI_EVENTQ) == 0 &&
> >>  		(rx_queue_id != -1)) {
> >>  		RTE_EDEV_LOG_ERR("Rx queues can only be connected
> >to single "
> >> @@ -2143,6 +2369,17 @@
> >rte_event_eth_rx_adapter_queue_add(uint8_t id,
> >>  	return 0;
> >>  }
> >>
> >> +static int
> >> +rxa_sw_vector_limits(struct
> >rte_event_eth_rx_adapter_vector_limits *limits)
> >> +{
> >> +	limits->max_sz = MAX_VECTOR_SIZE;
> >> +	limits->min_sz = MIN_VECTOR_SIZE;
> >> +	limits->max_timeout_ns = MAX_VECTOR_NS;
> >> +	limits->min_timeout_ns = MIN_VECTOR_NS;
> >> +
> >> +	return 0;
> >> +}
> >> +
> >>  int
> >>  rte_event_eth_rx_adapter_queue_del(uint8_t id, uint16_t
> >eth_dev_id,
> >>  				int32_t rx_queue_id)
> >> @@ -2333,7 +2570,8 @@
> >rte_event_eth_rx_adapter_queue_event_vector_config(
> >>  		ret = dev->dev_ops-
> >>eth_rx_adapter_event_vector_config(
> >>  			dev, &rte_eth_devices[eth_dev_id],
> >rx_queue_id, config);
> >>  	} else {
> >> -		ret = -ENOTSUP;
> >> +		rxa_sw_event_vector_configure(rx_adapter,
> >eth_dev_id,
> >> +					      rx_queue_id, config);
> >>  	}
> >>
> >>  	return ret;
> >> @@ -2371,7 +2609,7 @@
> >rte_event_eth_rx_adapter_vector_limits_get(
> >>  		ret = dev->dev_ops-
> >>eth_rx_adapter_vector_limits_get(
> >>  			dev, &rte_eth_devices[eth_port_id], limits);
> >>  	} else {
> >> -		ret = -ENOTSUP;
> >> +		ret = rxa_sw_vector_limits(limits);
> >>  	}
> >>
> >>  	return ret;
> >> diff --git a/lib/librte_eventdev/rte_eventdev.c
> >b/lib/librte_eventdev/rte_eventdev.c
> >> index be0499c52..62824654b 100644
> >> --- a/lib/librte_eventdev/rte_eventdev.c
> >> +++ b/lib/librte_eventdev/rte_eventdev.c
> >> @@ -122,7 +122,11 @@ rte_event_eth_rx_adapter_caps_get(uint8_t
> >dev_id, uint16_t eth_port_id,
> >>
> >>  	if (caps == NULL)
> >>  		return -EINVAL;
> >> -	*caps = 0;
> >> +
> >> +	if (dev->dev_ops->eth_rx_adapter_caps_get == NULL)
> >> +		*caps = RTE_EVENT_ETH_RX_ADAPTER_SW_CAP;
> >> +	else
> >> +		*caps = 0;
> >>
> >>  	return dev->dev_ops->eth_rx_adapter_caps_get ?
> >>  				(*dev->dev_ops-
> >>eth_rx_adapter_caps_get)(dev,
> >> --
> >> 2.17.1

With the above change, you can add Acked-by: Jay Jayatheerthan <jay.jayatheerthan@intel.com>.