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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_memzone.h>
53 #include <rte_launch.h>
55 #include <rte_per_lcore.h>
56 #include <rte_lcore.h>
57 #include <rte_atomic.h>
58 #include <rte_branch_prediction.h>
59 #include <rte_memory.h>
60 #include <rte_mempool.h>
62 #include <rte_interrupts.h>
64 #include <rte_ether.h>
65 #include <rte_ethdev.h>
67 #include <rte_string_fns.h>
73 * Forwarding of packets in MAC mode.
74 * Change the source and the destination Ethernet addressed of packets
75 * before forwarding them.
78 pkt_burst_mac_forward(struct fwd_stream *fs)
80 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
83 struct ether_hdr *eth_hdr;
88 uint64_t ol_flags = 0;
89 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
95 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
96 start_tsc = rte_rdtsc();
100 * Receive a burst of packets and forward them.
102 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
104 if (unlikely(nb_rx == 0))
107 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
108 fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
110 fs->rx_packets += nb_rx;
111 txp = &ports[fs->tx_port];
112 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_VLAN)
113 ol_flags = PKT_TX_VLAN_PKT;
114 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
115 ol_flags |= PKT_TX_QINQ_PKT;
116 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_MACSEC)
117 ol_flags |= PKT_TX_MACSEC;
118 for (i = 0; i < nb_rx; i++) {
119 if (likely(i < nb_rx - 1))
120 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
123 eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
124 ether_addr_copy(&peer_eth_addrs[fs->peer_addr],
126 ether_addr_copy(&ports[fs->tx_port].eth_addr,
128 mb->ol_flags = ol_flags;
129 mb->l2_len = sizeof(struct ether_hdr);
130 mb->l3_len = sizeof(struct ipv4_hdr);
131 mb->vlan_tci = txp->tx_vlan_id;
132 mb->vlan_tci_outer = txp->tx_vlan_id_outer;
134 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
138 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
140 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
141 rte_delay_us(burst_tx_delay_time);
142 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
143 &pkts_burst[nb_tx], nb_rx - nb_tx);
147 fs->tx_packets += nb_tx;
148 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
149 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
151 if (unlikely(nb_tx < nb_rx)) {
152 fs->fwd_dropped += (nb_rx - nb_tx);
154 rte_pktmbuf_free(pkts_burst[nb_tx]);
155 } while (++nb_tx < nb_rx);
157 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
158 end_tsc = rte_rdtsc();
159 core_cycles = (end_tsc - start_tsc);
160 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
164 struct fwd_engine mac_fwd_engine = {
165 .fwd_mode_name = "mac",
166 .port_fwd_begin = NULL,
167 .port_fwd_end = NULL,
168 .packet_fwd = pkt_burst_mac_forward,