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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 * 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];
81 struct ether_hdr *eth_hdr;
82 struct ether_addr addr;
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 *);
124 /* Swap dest and src mac addresses. */
125 ether_addr_copy(ð_hdr->d_addr, &addr);
126 ether_addr_copy(ð_hdr->s_addr, ð_hdr->d_addr);
127 ether_addr_copy(&addr, ð_hdr->s_addr);
129 mb->ol_flags = ol_flags;
130 mb->l2_len = sizeof(struct ether_hdr);
131 mb->l3_len = sizeof(struct ipv4_hdr);
132 mb->vlan_tci = txp->tx_vlan_id;
133 mb->vlan_tci_outer = txp->tx_vlan_id_outer;
135 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
139 if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
141 while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
142 rte_delay_us(burst_tx_delay_time);
143 nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
144 &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_swap_engine = {
165 .fwd_mode_name = "macswap",
166 .port_fwd_begin = NULL,
167 .port_fwd_end = NULL,
168 .packet_fwd = pkt_burst_mac_swap,