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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_mempool.h>
61 #include <rte_interrupts.h>
63 #include <rte_ether.h>
64 #include <rte_ethdev.h>
66 #include <rte_string_fns.h>
72 * Forwarding of packets in MAC mode.
73 * Change the source and the destination Ethernet addressed of packets
74 * before forwarding them.
77 pkt_burst_mac_forward(struct fwd_stream *fs)
79 struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
82 struct ether_hdr *eth_hdr;
87 uint64_t ol_flags = 0;
88 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
94 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
95 start_tsc = rte_rdtsc();
99 * Receive a burst of packets and forward them.
101 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst,
103 if (unlikely(nb_rx == 0))
106 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
107 fs->rx_burst_stats.pkt_burst_spread[nb_rx]++;
109 fs->rx_packets += nb_rx;
110 txp = &ports[fs->tx_port];
111 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_VLAN)
112 ol_flags = PKT_TX_VLAN_PKT;
113 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_INSERT_QINQ)
114 ol_flags |= PKT_TX_QINQ_PKT;
115 if (txp->tx_ol_flags & TESTPMD_TX_OFFLOAD_MACSEC)
116 ol_flags |= PKT_TX_MACSEC;
117 for (i = 0; i < nb_rx; i++) {
118 if (likely(i < nb_rx - 1))
119 rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
122 eth_hdr = rte_pktmbuf_mtod(mb, struct ether_hdr *);
123 ether_addr_copy(&peer_eth_addrs[fs->peer_addr],
125 ether_addr_copy(&ports[fs->tx_port].eth_addr,
127 mb->ol_flags = ol_flags;
128 mb->l2_len = sizeof(struct ether_hdr);
129 mb->l3_len = sizeof(struct ipv4_hdr);
130 mb->vlan_tci = txp->tx_vlan_id;
131 mb->vlan_tci_outer = txp->tx_vlan_id_outer;
133 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
137 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
139 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
140 rte_delay_us(burst_tx_delay_time);
141 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
142 &pkts_burst[nb_tx], nb_rx - nb_tx);
146 fs->tx_packets += nb_tx;
147 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS
148 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++;
150 if (unlikely(nb_tx < nb_rx)) {
151 fs->fwd_dropped += (nb_rx - nb_tx);
153 rte_pktmbuf_free(pkts_burst[nb_tx]);
154 } while (++nb_tx < nb_rx);
156 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES
157 end_tsc = rte_rdtsc();
158 core_cycles = (end_tsc - start_tsc);
159 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles);
163 struct fwd_engine mac_fwd_engine = {
164 .fwd_mode_name = "mac",
165 .port_fwd_begin = NULL,
166 .port_fwd_end = NULL,
167 .packet_fwd = pkt_burst_mac_forward,