[PATCH v2 1/3] eventdev: add element offset to event vector
pbhagavatula at marvell.com
pbhagavatula at marvell.com
Wed Sep 21 18:43:40 CEST 2022
From: Pavan Nikhilesh <pbhagavatula at marvell.com>
Add `rte_event_vector:elem_offset:12` bit field event vector
structure the bits are taken from `rte_event_vector::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
`rte_event_vector::nb_elem`.
Update Rx/Tx adapter SW implementation to use elem_offset.
Signed-off-by: Pavan Nikhilesh <pbhagavatula at marvell.com>
---
v2 Changes:
- Revert changes to definition of `rte_event_vector::nb_elem`
lib/eventdev/rte_event_eth_rx_adapter.c | 1 +
lib/eventdev/rte_event_eth_tx_adapter.c | 8 +++++---
lib/eventdev/rte_eventdev.h | 6 ++++--
3 files changed, 10 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..ccc7fffcce 100644
--- a/lib/eventdev/rte_event_eth_tx_adapter.c
+++ b/lib/eventdev/rte_event_eth_tx_adapter.c
@@ -524,16 +524,18 @@ 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);
rte_mempool_put(rte_mempool_from_obj(vec), vec);
return 0;
}
for (i = 0; i < vec->nb_elem; i++) {
nb_tx += rte_eth_tx_buffer(port, queue, tqi->tx_buf,
- mbufs[i]);
+ mbufs[i + vec->elem_offset]);
}
} else {
- for (i = 0; i < vec->nb_elem; i++) {
+ for (i = vec->elem_offset; i < vec->elem_offset + 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..f9fd44604e 100644
--- a/lib/eventdev/rte_eventdev.h
+++ b/lib/eventdev/rte_eventdev.h
@@ -1060,8 +1060,10 @@ 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;
+ /**< Number of elements valid in this event vector. */
+ uint16_t elem_offset : 12;
+ /**< Offset into the vector array where valid elements start from. */
+ 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
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