From 2c41740bf19ed0eb16d883557a24a654c804a0b4 Mon Sep 17 00:00:00 2001 From: Balazs Nemeth Date: Fri, 26 Mar 2021 12:01:25 +0100 Subject: [PATCH] net/qede: get consumer index once MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Calling ecore_chain_get_cons_idx repeatedly is slower than calling it once and using the result for the remainder of qede_process_tx_compl. Signed-off-by: Balazs Nemeth Reviewed-by: Igor Russkikh --- drivers/net/qede/qede_rxtx.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/net/qede/qede_rxtx.c b/drivers/net/qede/qede_rxtx.c index d2f77ed2e2..0002e2c1e7 100644 --- a/drivers/net/qede/qede_rxtx.c +++ b/drivers/net/qede/qede_rxtx.c @@ -882,12 +882,13 @@ qede_tx_queue_start(struct rte_eth_dev *eth_dev, uint16_t tx_queue_id) return rc; } -static inline void +static inline uint16_t qede_free_tx_pkt(struct qede_tx_queue *txq) { struct rte_mbuf *mbuf; uint16_t nb_segs; uint16_t idx; + uint16_t ret; idx = TX_CONS(txq); mbuf = txq->sw_tx_ring[idx]; @@ -895,20 +896,22 @@ qede_free_tx_pkt(struct qede_tx_queue *txq) nb_segs = mbuf->nb_segs; PMD_TX_LOG(DEBUG, txq, "nb_segs to free %u\n", nb_segs); + ret = nb_segs; while (nb_segs) { /* It's like consuming rxbuf in recv() */ ecore_chain_consume(&txq->tx_pbl); - txq->nb_tx_avail++; nb_segs--; } + rte_pktmbuf_free(mbuf); txq->sw_tx_ring[idx] = NULL; txq->sw_tx_cons++; PMD_TX_LOG(DEBUG, txq, "Freed tx packet\n"); } else { ecore_chain_consume(&txq->tx_pbl); - txq->nb_tx_avail++; + ret = 1; } + return ret; } static inline void @@ -916,19 +919,22 @@ qede_process_tx_compl(__rte_unused struct ecore_dev *edev, struct qede_tx_queue *txq) { uint16_t hw_bd_cons; -#ifdef RTE_LIBRTE_QEDE_DEBUG_TX uint16_t sw_tx_cons; -#endif + uint16_t remaining; rte_compiler_barrier(); + sw_tx_cons = ecore_chain_get_cons_idx(&txq->tx_pbl); hw_bd_cons = rte_le_to_cpu_16(*txq->hw_cons_ptr); #ifdef RTE_LIBRTE_QEDE_DEBUG_TX - sw_tx_cons = ecore_chain_get_cons_idx(&txq->tx_pbl); PMD_TX_LOG(DEBUG, txq, "Tx Completions = %u\n", abs(hw_bd_cons - sw_tx_cons)); #endif - while (hw_bd_cons != ecore_chain_get_cons_idx(&txq->tx_pbl)) - qede_free_tx_pkt(txq); + + remaining = hw_bd_cons - sw_tx_cons; + txq->nb_tx_avail += remaining; + + while (remaining) + remaining -= qede_free_tx_pkt(txq); } static int qede_drain_txq(struct qede_dev *qdev, -- 2.20.1