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42 #include <sys/queue.h>
45 #include <rte_common.h>
46 #include <rte_byteorder.h>
48 #include <rte_debug.h>
49 #include <rte_cycles.h>
50 #include <rte_memory.h>
51 #include <rte_memcpy.h>
52 #include <rte_launch.h>
54 #include <rte_per_lcore.h>
55 #include <rte_lcore.h>
56 #include <rte_atomic.h>
57 #include <rte_branch_prediction.h>
58 #include <rte_mempool.h>
60 #include <rte_interrupts.h>
62 #include <rte_ether.h>
63 #include <rte_ethdev.h>
65 #include <rte_string_fns.h>
72 * MAC swap forwarding mode: Swap the source and the destination Ethernet
73 * addresses of packets before forwarding them.
76 pkt_burst_mac_swap(struct fwd_stream *fs)
78 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
83 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
89 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
90 start_tsc = rte_rdtsc();
94 * Receive a burst of packets and forward them.
96 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
98 if (unlikely(nb_rx == 0))
101 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
102 fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
104 fs->rx_packets += nb_rx;
105 txp = &ports[fs->tx_port];
107 do_macswap(pkts_burst, nb_rx, txp);
109 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
113 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
115 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
116 rte_delay_us(burst_tx_delay_time);
117 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
118 &pkts_burst[nb_tx], nb_rx - nb_tx);
121 fs->tx_packets += nb_tx;
122 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
123 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
125 if (unlikely(nb_tx < nb_rx)) {
126 fs->fwd_dropped += (nb_rx - nb_tx);
128 rte_pktmbuf_free(pkts_burst[nb_tx]);
129 } while (++nb_tx < nb_rx);
131 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
132 end_tsc = rte_rdtsc();
133 core_cycles = (end_tsc - start_tsc);
134 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
138 struct fwd_engine mac_swap_engine = {
139 .fwd_mode_name = "macswap",
140 .port_fwd_begin = NULL,
141 .port_fwd_end = NULL,
142 .packet_fwd = pkt_burst_mac_swap,