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From: Wenbo Cao <caowenbo@mucse.com>
To: thomas@monjalon.net,
Wenbo Cao <caowenbo@mucse.com>
Cc: stephen@networkplumber.org, dev@dpdk.org, ferruh.yigit@amd.com,
andrew.rybchenko@oktetlabs.ru, yaojun@mucse.com
Subject: [PATCH v7 15/28] net/rnp: add Tx burst simple support
Date: Sat, 8 Feb 2025 10:43:52 +0800
Message-Id: <1738982645-34550-16-git-send-email-caowenbo@mucse.com>
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add only support simple send pkts.
Signed-off-by: Wenbo Cao <caowenbo@mucse.com>
---
drivers/net/rnp/rnp_ethdev.c | 6 ++++
drivers/net/rnp/rnp_rxtx.c | 85 +++++++++++++++++++++++++++++++++++++++++++-
drivers/net/rnp/rnp_rxtx.h | 1 +
3 files changed, 91 insertions(+), 1 deletion(-)
diff --git a/drivers/net/rnp/rnp_ethdev.c b/drivers/net/rnp/rnp_ethdev.c
index e5f984f..11cf2eb 100644
--- a/drivers/net/rnp/rnp_ethdev.c
+++ b/drivers/net/rnp/rnp_ethdev.c
@@ -579,6 +579,12 @@ static int rnp_dev_infos_get(struct rte_eth_dev *eth_dev,
};
dev_info->default_txconf = (struct rte_eth_txconf) {
+ .tx_thresh = {
+ .pthresh = RNP_TX_DESC_FETCH_TH,
+ .hthresh = RNP_TX_DESC_FETCH_BURST,
+ },
+ .tx_free_thresh = RNP_DEFAULT_TX_FREE_THRESH,
+ .tx_rs_thresh = RNP_DEFAULT_TX_RS_THRESH,
.offloads = 0,
};
diff --git a/drivers/net/rnp/rnp_rxtx.c b/drivers/net/rnp/rnp_rxtx.c
index 8553fbf..e8c1444 100644
--- a/drivers/net/rnp/rnp_rxtx.c
+++ b/drivers/net/rnp/rnp_rxtx.c
@@ -756,6 +756,89 @@ int rnp_rx_queue_start(struct rte_eth_dev *eth_dev, uint16_t qidx)
return nb_rx;
}
+static __rte_always_inline int
+rnp_clean_tx_ring(struct rnp_tx_queue *txq)
+{
+ volatile struct rnp_tx_desc *txbd;
+ struct rnp_txsw_entry *tx_swbd;
+ struct rte_mbuf *m;
+ uint16_t next_dd;
+ uint16_t i;
+
+ txbd = &txq->tx_bdr[txq->tx_next_dd];
+ if (!(txbd->d.cmd & RNP_CMD_DD))
+ return 0;
+ *txbd = txq->zero_desc;
+ next_dd = txq->tx_next_dd - (txq->tx_free_thresh - 1);
+ tx_swbd = &txq->sw_ring[next_dd];
+
+ for (i = 0; i < txq->tx_rs_thresh; ++i, ++tx_swbd) {
+ if (tx_swbd->mbuf) {
+ m = tx_swbd->mbuf;
+ rte_pktmbuf_free_seg(m);
+ tx_swbd->mbuf = NULL;
+ }
+ }
+ txq->nb_tx_free = (txq->nb_tx_free + txq->tx_rs_thresh);
+ txq->tx_next_dd = (txq->tx_next_dd + txq->tx_rs_thresh) &
+ txq->attr.nb_desc_mask;
+
+ return 0;
+}
+
+static __rte_always_inline uint16_t
+rnp_xmit_simple(void *_txq, struct rte_mbuf **tx_pkts, uint16_t nb_pkts)
+{
+ struct rnp_tx_queue *txq = (struct rnp_tx_queue *)_txq;
+ volatile struct rnp_tx_desc *txbd;
+ struct rnp_txsw_entry *tx_swbd;
+ uint64_t phy;
+ uint16_t start;
+ uint16_t i;
+
+ if (unlikely(!txq->txq_started || !txq->tx_link))
+ return 0;
+
+ if (txq->nb_tx_free < txq->tx_free_thresh)
+ rnp_clean_tx_ring(txq);
+
+ nb_pkts = RTE_MIN(txq->nb_tx_free, nb_pkts);
+ if (!nb_pkts)
+ return 0;
+ start = nb_pkts;
+ i = txq->tx_tail;
+
+ while (nb_pkts--) {
+ txbd = &txq->tx_bdr[i];
+ tx_swbd = &txq->sw_ring[i];
+ tx_swbd->mbuf = *tx_pkts++;
+ phy = rnp_get_dma_addr(&txq->attr, tx_swbd->mbuf);
+ txbd->d.addr = phy;
+ if (unlikely(tx_swbd->mbuf->data_len > RNP_MAC_MAXFRM_SIZE))
+ tx_swbd->mbuf->data_len = 0;
+ txbd->d.blen = tx_swbd->mbuf->data_len;
+ txbd->d.cmd = RNP_CMD_EOP;
+
+ i = (i + 1) & txq->attr.nb_desc_mask;
+ }
+ txq->nb_tx_free -= start;
+ if (txq->tx_tail + start > txq->tx_next_rs) {
+ txbd = &txq->tx_bdr[txq->tx_next_rs];
+ txbd->d.cmd |= RNP_CMD_RS;
+ txq->tx_next_rs = (txq->tx_next_rs + txq->tx_rs_thresh);
+
+ if (txq->tx_next_rs > txq->attr.nb_desc)
+ txq->tx_next_rs = txq->tx_rs_thresh - 1;
+ }
+
+ txq->tx_tail = i;
+
+ rte_wmb();
+ RNP_REG_WR(txq->tx_tailreg, 0, i);
+
+ return start;
+}
+
int rnp_rx_func_select(struct rte_eth_dev *dev)
{
dev->rx_pkt_burst = rnp_recv_pkts;
@@ -765,7 +848,7 @@ int rnp_rx_func_select(struct rte_eth_dev *dev)
int rnp_tx_func_select(struct rte_eth_dev *dev)
{
- dev->tx_pkt_burst = rte_eth_pkt_burst_dummy;
+ dev->tx_pkt_burst = rnp_xmit_simple;
dev->tx_pkt_prepare = rte_eth_pkt_burst_dummy;
return 0;
diff --git a/drivers/net/rnp/rnp_rxtx.h b/drivers/net/rnp/rnp_rxtx.h
index 39e5184..a8fd8d0 100644
--- a/drivers/net/rnp/rnp_rxtx.h
+++ b/drivers/net/rnp/rnp_rxtx.h
@@ -89,6 +89,7 @@ struct rnp_tx_queue {
const struct rte_memzone *rz;
uint64_t ring_phys_addr; /* tx dma ring physical addr */
volatile struct rnp_tx_desc *tx_bdr; /* tx dma ring virtual addr */
+ volatile struct rnp_tx_desc zero_desc;
struct rnp_txsw_entry *sw_ring; /* tx software ring addr */
volatile void *tx_tailreg; /* hw desc tail register */
volatile void *tx_headreg; /* hw desc head register*/
--
1.8.3.1