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From: <pbhagavatula@marvell.com>
To: <jerinj@marvell.com>, Jay Jayatheerthan <jay.jayatheerthan@intel.com>
CC: <dev@dpdk.org>, <erik.g.carrillo@intel.com>, <abhinandan.gujjar@intel.com>,
<timothy.mcdaniel@intel.com>, <sthotton@marvell.com>,
<hemant.agrawal@nxp.com>, <nipun.gupta@nxp.com>,
<harry.van.haaren@intel.com>, <mattias.ronnblom@ericsson.com>,
<liangma@liangbit.com>, <peter.mccarthy@intel.com>, Pavan Nikhilesh
<pbhagavatula@marvell.com>
Subject: [PATCH 1/3] eventdev: add element offset to event vector
Date: Tue, 16 Aug 2022 21:19:30 +0530
Message-ID: <20220816154932.10168-1-pbhagavatula@marvell.com>
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From: Pavan Nikhilesh <pbhagavatula@marvell.com>
Add ``elem_offset:12`` bit field event vector structure
the bits are taken from ``rsvd:15``.
The element offset defines the offset into the vector array
at which valid elements start.
The valid elements count will be equal to nb_elem - elem_offset.
Update Rx/Tx adapter SW implementation to use elem_offset.
Signed-off-by: Pavan Nikhilesh <pbhagavatula@marvell.com>
---
lib/eventdev/rte_event_eth_rx_adapter.c | 1 +
lib/eventdev/rte_event_eth_tx_adapter.c | 7 ++++---
lib/eventdev/rte_eventdev.h | 8 ++++++--
3 files changed, 11 insertions(+), 5 deletions(-)
diff --git a/lib/eventdev/rte_event_eth_rx_adapter.c b/lib/eventdev/rte_event_eth_rx_adapter.c
index bf8741d2ea..bd72f9b845 100644
--- a/lib/eventdev/rte_event_eth_rx_adapter.c
+++ b/lib/eventdev/rte_event_eth_rx_adapter.c
@@ -855,6 +855,7 @@ rxa_init_vector(struct event_eth_rx_adapter *rx_adapter,
vec->vector_ev->port = vec->port;
vec->vector_ev->queue = vec->queue;
vec->vector_ev->attr_valid = true;
+ vec->vector_ev->elem_offset = 0;
TAILQ_INSERT_TAIL(&rx_adapter->vector_list, vec, next);
}
diff --git a/lib/eventdev/rte_event_eth_tx_adapter.c b/lib/eventdev/rte_event_eth_tx_adapter.c
index b4b37f1cae..da70883e0d 100644
--- a/lib/eventdev/rte_event_eth_tx_adapter.c
+++ b/lib/eventdev/rte_event_eth_tx_adapter.c
@@ -524,16 +524,17 @@ txa_process_event_vector(struct txa_service_data *txa,
queue = vec->queue;
tqi = txa_service_queue(txa, port, queue);
if (unlikely(tqi == NULL || !tqi->added)) {
- rte_pktmbuf_free_bulk(mbufs, vec->nb_elem);
+ rte_pktmbuf_free_bulk(&mbufs[vec->elem_offset],
+ vec->nb_elem - vec->elem_offset);
rte_mempool_put(rte_mempool_from_obj(vec), vec);
return 0;
}
- for (i = 0; i < vec->nb_elem; i++) {
+ for (i = vec->elem_offset; i < vec->nb_elem; i++) {
nb_tx += rte_eth_tx_buffer(port, queue, tqi->tx_buf,
mbufs[i]);
}
} else {
- for (i = 0; i < vec->nb_elem; i++) {
+ for (i = vec->elem_offset; i < vec->nb_elem; i++) {
port = mbufs[i]->port;
queue = rte_event_eth_tx_adapter_txq_get(mbufs[i]);
tqi = txa_service_queue(txa, port, queue);
diff --git a/lib/eventdev/rte_eventdev.h b/lib/eventdev/rte_eventdev.h
index 6a6f6ea4c1..b0698fe748 100644
--- a/lib/eventdev/rte_eventdev.h
+++ b/lib/eventdev/rte_eventdev.h
@@ -1060,8 +1060,12 @@ rte_event_dev_close(uint8_t dev_id);
*/
struct rte_event_vector {
uint16_t nb_elem;
- /**< Number of elements in this event vector. */
- uint16_t rsvd : 15;
+ /**< Total number of elements in this event vector. */
+ uint16_t elem_offset : 12;
+ /**< Offset into the vector array where valid elements start from.
+ * The valid elements count would be nb_elem - elem_offset.
+ */
+ uint16_t rsvd : 3;
/**< Reserved for future use */
uint16_t attr_valid : 1;
/**< Indicates that the below union attributes have valid information.
--
2.25.1