[dpdk-dev] [PATCH v2] net/ena: fix assigning NUMA node to IO queue

[Michal Krawczyk]

Previous solution was using memzones in invalid way in hope to assign
IO queue to the appropriate NUMA zone.

The right way is to use socket_id from the rx/tx queue setup function
and then pass it to the IO queue.

Fixes: 3d3edc265fc8 ("net/ena: make coherent memory allocation NUMA-aware")
Cc: stable at dpdk.org

Signed-off-by: Michal Krawczyk <mk at semihalf.com>
---
v2:
* Remove gerrit change id
* Add dpdk-stable to cc

 drivers/net/ena/ena_ethdev.c | 24 +++++-------------------
 drivers/net/ena/ena_ethdev.h |  2 ++
 2 files changed, 7 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index b6651fc..e9ccb04 100644
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -272,22 +272,6 @@ static const struct eth_dev_ops ena_dev_ops = {
 	.reta_query           = ena_rss_reta_query,
 };
 
-#define NUMA_NO_NODE	SOCKET_ID_ANY
-
-static inline int ena_cpu_to_node(int cpu)
-{
-	struct rte_config *config = rte_eal_get_configuration();
-	struct rte_fbarray *arr = &config->mem_config->memzones;
-	const struct rte_memzone *mz;
-
-	if (unlikely(cpu >= RTE_MAX_MEMZONE))
-		return NUMA_NO_NODE;
-
-	mz = rte_fbarray_get(arr, cpu);
-
-	return mz->socket_id;
-}
-
 static inline void ena_rx_mbuf_prepare(struct rte_mbuf *mbuf,
 				       struct ena_com_rx_ctx *ena_rx_ctx)
 {
@@ -1126,7 +1110,7 @@ static int ena_create_io_queue(struct ena_ring *ring)
 	}
 	ctx.qid = ena_qid;
 	ctx.msix_vector = -1; /* interrupts not used */
-	ctx.numa_node = ena_cpu_to_node(ring->id);
+	ctx.numa_node = ring->numa_socket_id;
 
 	rc = ena_com_create_io_queue(ena_dev, &ctx);
 	if (rc) {
@@ -1224,7 +1208,7 @@ static int ena_queue_start(struct ena_ring *ring)
 static int ena_tx_queue_setup(struct rte_eth_dev *dev,
 			      uint16_t queue_idx,
 			      uint16_t nb_desc,
-			      __rte_unused unsigned int socket_id,
+			      unsigned int socket_id,
 			      const struct rte_eth_txconf *tx_conf)
 {
 	struct ena_ring *txq = NULL;
@@ -1262,6 +1246,7 @@ static int ena_tx_queue_setup(struct rte_eth_dev *dev,
 	txq->next_to_clean = 0;
 	txq->next_to_use = 0;
 	txq->ring_size = nb_desc;
+	txq->numa_socket_id = socket_id;
 
 	txq->tx_buffer_info = rte_zmalloc("txq->tx_buffer_info",
 					  sizeof(struct ena_tx_buffer) *
@@ -1309,7 +1294,7 @@ static int ena_tx_queue_setup(struct rte_eth_dev *dev,
 static int ena_rx_queue_setup(struct rte_eth_dev *dev,
 			      uint16_t queue_idx,
 			      uint16_t nb_desc,
-			      __rte_unused unsigned int socket_id,
+			      unsigned int socket_id,
 			      __rte_unused const struct rte_eth_rxconf *rx_conf,
 			      struct rte_mempool *mp)
 {
@@ -1347,6 +1332,7 @@ static int ena_rx_queue_setup(struct rte_eth_dev *dev,
 	rxq->next_to_clean = 0;
 	rxq->next_to_use = 0;
 	rxq->ring_size = nb_desc;
+	rxq->numa_socket_id = socket_id;
 	rxq->mb_pool = mp;
 
 	rxq->rx_buffer_info = rte_zmalloc("rxq->buffer_info",
diff --git a/drivers/net/ena/ena_ethdev.h b/drivers/net/ena/ena_ethdev.h
index dcc8690..9067e90 100644
--- a/drivers/net/ena/ena_ethdev.h
+++ b/drivers/net/ena/ena_ethdev.h
@@ -143,6 +143,8 @@ struct ena_ring {
 		struct ena_stats_rx rx_stats;
 		struct ena_stats_tx tx_stats;
 	};
+
+	unsigned int numa_socket_id;
 } __rte_cache_aligned;
 
 enum ena_adapter_state {
-- 
2.7.4