From: Chengwen Feng fengchengwen@huawei.com
This patch add support tx_done_cleanup ops, which could support for the API rte_eth_tx_done_cleanup to free consumed mbufs on Tx ring.
Signed-off-by: Chengwen Feng fengchengwen@huawei.com Signed-off-by: Lijun Ou oulijun@huawei.com --- V2->V3: - rewrite the patch title according to Ferruh Yigit's advice --- doc/guides/nics/features/hns3.ini | 1 + doc/guides/nics/features/hns3_vf.ini | 1 + doc/guides/rel_notes/release_21_05.rst | 1 + drivers/net/hns3/hns3_ethdev.c | 1 + drivers/net/hns3/hns3_ethdev_vf.c | 1 + drivers/net/hns3/hns3_rxtx.c | 59 ++++++++++++++++++++++++++++++++++ drivers/net/hns3/hns3_rxtx.h | 1 + 7 files changed, 65 insertions(+)
diff --git a/doc/guides/nics/features/hns3.ini b/doc/guides/nics/features/hns3.ini index a1f5f9e..3aeea8e 100644 --- a/doc/guides/nics/features/hns3.ini +++ b/doc/guides/nics/features/hns3.ini @@ -10,6 +10,7 @@ Queue start/stop = Y Runtime Rx queue setup = Y Runtime Tx queue setup = Y Burst mode info = Y +Free Tx mbuf on demand = Y MTU update = Y Jumbo frame = Y Scattered Rx = Y diff --git a/doc/guides/nics/features/hns3_vf.ini b/doc/guides/nics/features/hns3_vf.ini index 99a0bf0..c796cd5 100644 --- a/doc/guides/nics/features/hns3_vf.ini +++ b/doc/guides/nics/features/hns3_vf.ini @@ -10,6 +10,7 @@ Queue start/stop = Y Runtime Rx queue setup = Y Runtime Tx queue setup = Y Burst mode info = Y +Free Tx mbuf on demand = Y MTU update = Y Jumbo frame = Y Scattered Rx = Y diff --git a/doc/guides/rel_notes/release_21_05.rst b/doc/guides/rel_notes/release_21_05.rst index b82ea82..15e016e 100644 --- a/doc/guides/rel_notes/release_21_05.rst +++ b/doc/guides/rel_notes/release_21_05.rst @@ -58,6 +58,7 @@ New Features * **Updated Hisilicon hns3 driver.**
* Added support for module EEPROM dumping. + * Added support for freeing Tx mbuf on demand.
* **Updated Wangxun txgbe driver.**
diff --git a/drivers/net/hns3/hns3_ethdev.c b/drivers/net/hns3/hns3_ethdev.c index e02a7ec..91d720a 100644 --- a/drivers/net/hns3/hns3_ethdev.c +++ b/drivers/net/hns3/hns3_ethdev.c @@ -6388,6 +6388,7 @@ static const struct eth_dev_ops hns3_eth_dev_ops = { .fec_get = hns3_fec_get, .fec_set = hns3_fec_set, .tm_ops_get = hns3_tm_ops_get, + .tx_done_cleanup = hns3_tx_done_cleanup, };
static const struct hns3_reset_ops hns3_reset_ops = { diff --git a/drivers/net/hns3/hns3_ethdev_vf.c b/drivers/net/hns3/hns3_ethdev_vf.c index 3f9f328..1b8c029 100644 --- a/drivers/net/hns3/hns3_ethdev_vf.c +++ b/drivers/net/hns3/hns3_ethdev_vf.c @@ -2763,6 +2763,7 @@ static const struct eth_dev_ops hns3vf_eth_dev_ops = { .vlan_offload_set = hns3vf_vlan_offload_set, .get_reg = hns3_get_regs, .dev_supported_ptypes_get = hns3_dev_supported_ptypes_get, + .tx_done_cleanup = hns3_tx_done_cleanup, };
static const struct hns3_reset_ops hns3vf_reset_ops = { diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c index 222cf8a..5e79177 100644 --- a/drivers/net/hns3/hns3_rxtx.c +++ b/drivers/net/hns3/hns3_rxtx.c @@ -3913,6 +3913,65 @@ hns3_dev_tx_queue_stop(struct rte_eth_dev *dev, uint16_t tx_queue_id) return 0; }
+static int +hns3_tx_done_cleanup_full(struct hns3_tx_queue *txq, uint32_t free_cnt) +{ + uint16_t next_to_clean = txq->next_to_clean; + uint16_t next_to_use = txq->next_to_use; + uint16_t tx_bd_ready = txq->tx_bd_ready; + struct hns3_entry *tx_pkt = &txq->sw_ring[next_to_clean]; + struct hns3_desc *desc = &txq->tx_ring[next_to_clean]; + uint32_t idx; + + if (free_cnt == 0 || free_cnt > txq->nb_tx_desc) + free_cnt = txq->nb_tx_desc; + + for (idx = 0; idx < free_cnt; idx++) { + if (next_to_clean == next_to_use) + break; + + if (desc->tx.tp_fe_sc_vld_ra_ri & + rte_cpu_to_le_16(BIT(HNS3_TXD_VLD_B))) + break; + + if (tx_pkt->mbuf != NULL) { + rte_pktmbuf_free_seg(tx_pkt->mbuf); + tx_pkt->mbuf = NULL; + } + + next_to_clean++; + tx_bd_ready++; + tx_pkt++; + desc++; + if (next_to_clean == txq->nb_tx_desc) { + tx_pkt = txq->sw_ring; + desc = txq->tx_ring; + next_to_clean = 0; + } + } + + if (idx > 0) { + txq->next_to_clean = next_to_clean; + txq->tx_bd_ready = tx_bd_ready; + } + + return (int)idx; +} + +int +hns3_tx_done_cleanup(void *txq, uint32_t free_cnt) +{ + struct hns3_tx_queue *q = (struct hns3_tx_queue *)txq; + struct rte_eth_dev *dev = &rte_eth_devices[q->port_id]; + + if (dev->tx_pkt_burst == hns3_xmit_pkts) + return hns3_tx_done_cleanup_full(q, free_cnt); + else if (dev->tx_pkt_burst == hns3_dummy_rxtx_burst) + return 0; + else + return -ENOTSUP; +} + uint32_t hns3_rx_queue_count(struct rte_eth_dev *dev, uint16_t rx_queue_id) { diff --git a/drivers/net/hns3/hns3_rxtx.h b/drivers/net/hns3/hns3_rxtx.h index 8f5ae5c..7118bd4 100644 --- a/drivers/net/hns3/hns3_rxtx.h +++ b/drivers/net/hns3/hns3_rxtx.h @@ -706,5 +706,6 @@ int hns3_start_all_txqs(struct rte_eth_dev *dev); int hns3_start_all_rxqs(struct rte_eth_dev *dev); void hns3_stop_all_txqs(struct rte_eth_dev *dev); void hns3_restore_tqp_enable_state(struct hns3_hw *hw); +int hns3_tx_done_cleanup(void *txq, uint32_t free_cnt);
#endif /* _HNS3_RXTX_H_ */