mirror of https://github.com/F-Stack/f-stack.git
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
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/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 2023 Arm Limited.
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*/
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#include "testpmd.h"
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/*
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* Forwarding of packets in I/O mode.
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* Enable mbufs recycle mode to recycle txq used mbufs
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* for rxq mbuf ring. This can bypass mempool path and
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* save CPU cycles.
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*/
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static bool
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pkt_burst_recycle_mbufs(struct fwd_stream *fs)
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{
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struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
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uint16_t nb_rx;
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/* Recycle used mbufs from the txq, and move these mbufs into
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* the rxq mbuf ring.
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*/
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rte_eth_recycle_mbufs(fs->rx_port, fs->rx_queue,
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fs->tx_port, fs->tx_queue, &(fs->recycle_rxq_info));
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/*
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* Receive a burst of packets and forward them.
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*/
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nb_rx = common_fwd_stream_receive(fs, pkts_burst, nb_pkt_per_burst);
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if (unlikely(nb_rx == 0))
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return false;
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common_fwd_stream_transmit(fs, pkts_burst, nb_rx);
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return true;
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}
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static void
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recycle_mbufs_stream_init(struct fwd_stream *fs)
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{
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int rc;
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/* Retrieve information about given ports's Rx queue
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* for recycling mbufs.
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*/
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rc = rte_eth_recycle_rx_queue_info_get(fs->rx_port,
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fs->rx_queue, &(fs->recycle_rxq_info));
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if (rc != 0)
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TESTPMD_LOG(WARNING,
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"Failed to get rx queue mbufs recycle info\n");
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common_fwd_stream_init(fs);
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}
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struct fwd_engine recycle_mbufs_engine = {
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.fwd_mode_name = "recycle_mbufs",
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.stream_init = recycle_mbufs_stream_init,
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.packet_fwd = pkt_burst_recycle_mbufs,
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};
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