Define specific function implementation for ixgbe driver.
Currently, recycle buffer mode can support 128bit
vector path. And can be enabled both in fast free and
no fast free mode.
Suggested-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
Signed-off-by: Feifei Wang <feifei.wa...@arm.com>
Reviewed-by: Ruifeng Wang <ruifeng.w...@arm.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
---
drivers/net/ixgbe/ixgbe_ethdev.c | 1 +
drivers/net/ixgbe/ixgbe_ethdev.h | 3 +
drivers/net/ixgbe/ixgbe_rxtx.c | 153 +++++++++++++++++++++++++++++++
drivers/net/ixgbe/ixgbe_rxtx.h | 4 +
4 files changed, 161 insertions(+)
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.c b/drivers/net/ixgbe/ixgbe_ethdev.c
index 88118bc305..3bada9abbd 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.c
+++ b/drivers/net/ixgbe/ixgbe_ethdev.c
@@ -543,6 +543,7 @@ static const struct eth_dev_ops ixgbe_eth_dev_ops = {
.set_mc_addr_list = ixgbe_dev_set_mc_addr_list,
.rxq_info_get = ixgbe_rxq_info_get,
.txq_info_get = ixgbe_txq_info_get,
+ .rxq_buf_recycle_info_get = ixgbe_rxq_buf_recycle_info_get,
.timesync_enable = ixgbe_timesync_enable,
.timesync_disable = ixgbe_timesync_disable,
.timesync_read_rx_timestamp = ixgbe_timesync_read_rx_timestamp,
diff --git a/drivers/net/ixgbe/ixgbe_ethdev.h b/drivers/net/ixgbe/ixgbe_ethdev.h
index 48290af512..ca6aa0da64 100644
--- a/drivers/net/ixgbe/ixgbe_ethdev.h
+++ b/drivers/net/ixgbe/ixgbe_ethdev.h
@@ -625,6 +625,9 @@ void ixgbe_rxq_info_get(struct rte_eth_dev *dev, uint16_t
queue_id,
void ixgbe_txq_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
struct rte_eth_txq_info *qinfo);
+void ixgbe_rxq_buf_recycle_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+ struct rte_eth_rxq_buf_recycle_info *rxq_buf_recycle_info);
+
int ixgbevf_dev_rx_init(struct rte_eth_dev *dev);
void ixgbevf_dev_tx_init(struct rte_eth_dev *dev);
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.c b/drivers/net/ixgbe/ixgbe_rxtx.c
index c9d6ca9efe..ee27121315 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.c
+++ b/drivers/net/ixgbe/ixgbe_rxtx.c
@@ -953,6 +953,133 @@ ixgbe_xmit_pkts(void *tx_queue, struct rte_mbuf **tx_pkts,
return nb_tx;
}
+uint16_t
+ixgbe_tx_buf_stash_vec(void *tx_queue,
+ struct rte_eth_rxq_buf_recycle_info *rxq_buf_recycle_info)
+{
+ struct ixgbe_tx_queue *txq = tx_queue;
+ struct ixgbe_tx_entry *txep;
+ struct rte_mbuf **rxep;
+ struct rte_mbuf *m[RTE_IXGBE_TX_MAX_FREE_BUF_SZ];
+ int i, j, n;
+ uint32_t status;
+ uint16_t avail = 0;
+ uint16_t buf_ring_size = rxq_buf_recycle_info->buf_ring_size;
+ uint16_t mask = rxq_buf_recycle_info->buf_ring_size - 1;
+ uint16_t refill_request = rxq_buf_recycle_info->refill_request;
+ uint16_t refill_head = *rxq_buf_recycle_info->refill_head;
+ uint16_t receive_tail = *rxq_buf_recycle_info->receive_tail;
+
+ /* Get available recycling Rx buffers. */
+ avail = (buf_ring_size - (refill_head - receive_tail)) & mask;
+
+ /* Check Tx free thresh and Rx available space. */
+ if (txq->nb_tx_free > txq->tx_free_thresh || avail <= txq->tx_rs_thresh)
+ return 0;
+
+ /* check DD bits on threshold descriptor */
+ status = txq->tx_ring[txq->tx_next_dd].wb.status;
+ if (!(status & IXGBE_ADVTXD_STAT_DD))
+ return 0;
+
+ n = txq->tx_rs_thresh;
+
+ /* Buffer recycle can only support no ring buffer wraparound.
+ * Two case for this:
+ *
+ * case 1: The refill head of Rx buffer ring needs to be aligned with
+ * buffer ring size. In this case, the number of Tx freeing buffers
+ * should be equal to refill_request.
+ *
+ * case 2: The refill head of Rx ring buffer does not need to be aligned
+ * with buffer ring size. In this case, the update of refill head can
not
+ * exceed the Rx buffer ring size.
+ */
+ if (refill_request != n ||
+ (!refill_request && (refill_head + n > buf_ring_size)))
+ return 0;
+
+ /* First buffer to free from S/W ring is at index
+ * tx_next_dd - (tx_rs_thresh-1).
+ */
+ txep = &txq->sw_ring[txq->tx_next_dd - (n - 1)];
+ rxep = rxq_buf_recycle_info->buf_ring;
+ rxep += refill_head;
+
+ if (txq->offloads & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) {
+ /* Directly put mbufs from Tx to Rx. */
+ for (i = 0; i < n; i++, rxep++, txep++)
+ *rxep = txep[0].mbuf;
+ } else {
+ for (i = 0, j = 0; i < n; i++) {
+ /* Avoid txq contains buffers from expected mempoo. */
+ if (unlikely(rxq_buf_recycle_info->mp
+ != txep[i].mbuf->pool))
+ return 0;
+
+ m[j] = rte_pktmbuf_prefree_seg(txep[i].mbuf);
+
+ /* In case 1, each of Tx buffers should be the
+ * last reference.
+ */
+ if (unlikely(m[j] == NULL && refill_request))
+ return 0;
+ /* In case 2, the number of valid Tx free
+ * buffers should be recorded.
+ */
+ j++;
+ }
+ rte_memcpy(rxep, m, sizeof(void *) * j);
+ }
+
+ /* Update counters for Tx. */
+ txq->nb_tx_free = (uint16_t)(txq->nb_tx_free + txq->tx_rs_thresh);
+ txq->tx_next_dd = (uint16_t)(txq->tx_next_dd + txq->tx_rs_thresh);
+ if (txq->tx_next_dd >= txq->nb_tx_desc)
+ txq->tx_next_dd = (uint16_t)(txq->tx_rs_thresh - 1);
+
+ return n;
+}
+
+uint16_t
+ixgbe_rx_descriptors_refill_vec(void *rx_queue, uint16_t nb)
+{
+ struct ixgbe_rx_queue *rxq = rx_queue;
+ struct ixgbe_rx_entry *rxep;
+ volatile union ixgbe_adv_rx_desc *rxdp;
+ uint16_t rx_id;
+ uint64_t paddr;
+ uint64_t dma_addr;
+ uint16_t i;
+
+ rxdp = rxq->rx_ring + rxq->rxrearm_start;
+ rxep = &rxq->sw_ring[rxq->rxrearm_start];
+
+ for (i = 0; i < nb; i++) {
+ /* Initialize rxdp descs. */
+ paddr = (rxep[i].mbuf)->buf_iova + RTE_PKTMBUF_HEADROOM;
+ dma_addr = rte_cpu_to_le_64(paddr);
+ /* flush desc with pa dma_addr */
+ rxdp[i].read.hdr_addr = 0;
+ rxdp[i].read.pkt_addr = dma_addr;
+ }
+
+ /* Update the descriptor initializer index */
+ rxq->rxrearm_start += nb;
+ if (rxq->rxrearm_start >= rxq->nb_rx_desc)
+ rxq->rxrearm_start = 0;
+
+ rxq->rxrearm_nb -= nb;
+
+ rx_id = (uint16_t)((rxq->rxrearm_start == 0) ?
+ (rxq->nb_rx_desc - 1) : (rxq->rxrearm_start - 1));
+
+ /* Update the tail pointer on the NIC */
+ IXGBE_PCI_REG_WRITE(rxq->rdt_reg_addr, rx_id);
+
+ return nb;
+}
+
/*********************************************************************
*
* TX prep functions
@@ -2558,6 +2685,7 @@ ixgbe_set_tx_function(struct rte_eth_dev *dev, struct
ixgbe_tx_queue *txq)
(rte_eal_process_type() != RTE_PROC_PRIMARY ||
ixgbe_txq_vec_setup(txq) == 0)) {
PMD_INIT_LOG(DEBUG, "Vector tx enabled.");
+ dev->tx_buf_stash = ixgbe_tx_buf_stash_vec;
dev->tx_pkt_burst = ixgbe_xmit_pkts_vec;
} else
dev->tx_pkt_burst = ixgbe_xmit_pkts_simple;
@@ -4823,6 +4951,7 @@ ixgbe_set_rx_function(struct rte_eth_dev *dev)
"callback (port=%d).",
dev->data->port_id);
+ dev->rx_descriptors_refill =
ixgbe_rx_descriptors_refill_vec;
dev->rx_pkt_burst = ixgbe_recv_scattered_pkts_vec;
} else if (adapter->rx_bulk_alloc_allowed) {
PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk "
@@ -4852,6 +4981,7 @@ ixgbe_set_rx_function(struct rte_eth_dev *dev)
RTE_IXGBE_DESCS_PER_LOOP,
dev->data->port_id);
+ dev->rx_descriptors_refill = ixgbe_rx_descriptors_refill_vec;
dev->rx_pkt_burst = ixgbe_recv_pkts_vec;
} else if (adapter->rx_bulk_alloc_allowed) {
PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
@@ -5623,6 +5753,29 @@ ixgbe_txq_info_get(struct rte_eth_dev *dev, uint16_t
queue_id,
qinfo->conf.tx_deferred_start = txq->tx_deferred_start;
}
+void
+ixgbe_rxq_buf_recycle_info_get(struct rte_eth_dev *dev, uint16_t queue_id,
+ struct rte_eth_rxq_buf_recycle_info *rxq_buf_recycle_info)
+{
+ struct ixgbe_rx_queue *rxq;
+ struct ixgbe_adapter *adapter = dev->data->dev_private;
+
+ rxq = dev->data->rx_queues[queue_id];
+
+ rxq_buf_recycle_info->buf_ring = (void *)rxq->sw_ring;
+ rxq_buf_recycle_info->mp = rxq->mb_pool;
+ rxq_buf_recycle_info->buf_ring_size = rxq->nb_rx_desc;
+ rxq_buf_recycle_info->receive_tail = &rxq->rx_tail;
+
+ if (adapter->rx_vec_allowed) {
+ rxq_buf_recycle_info->refill_request =
RTE_IXGBE_RXQ_REARM_THRESH;
+ rxq_buf_recycle_info->refill_head = &rxq->rxrearm_start;
+ } else {
+ rxq_buf_recycle_info->refill_request = rxq->rx_free_thresh;
+ rxq_buf_recycle_info->refill_head = &rxq->rx_free_trigger;
+ }
+}
+
/*
* [VF] Initializes Receive Unit.
*/
diff --git a/drivers/net/ixgbe/ixgbe_rxtx.h b/drivers/net/ixgbe/ixgbe_rxtx.h
index 668a5b9814..18f890f91a 100644
--- a/drivers/net/ixgbe/ixgbe_rxtx.h
+++ b/drivers/net/ixgbe/ixgbe_rxtx.h
@@ -295,6 +295,10 @@ int ixgbe_dev_tx_done_cleanup(void *tx_queue, uint32_t
free_cnt);
extern const uint32_t ptype_table[IXGBE_PACKET_TYPE_MAX];
extern const uint32_t ptype_table_tn[IXGBE_PACKET_TYPE_TN_MAX];
+uint16_t ixgbe_tx_buf_stash_vec(void *tx_queue,
+ struct rte_eth_rxq_buf_recycle_info *rxq_buf_recycle_info);
+uint16_t ixgbe_rx_descriptors_refill_vec(void *rx_queue, uint16_t nb);
+
uint16_t ixgbe_xmit_fixed_burst_vec(void *tx_queue, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
int ixgbe_txq_vec_setup(struct ixgbe_tx_queue *txq);
--
2.25.1
