1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2014 Intel Corporation 3 */ 4 5 #include <stdarg.h> 6 #include <stdio.h> 7 #include <string.h> 8 #include <errno.h> 9 #include <stdint.h> 10 #include <unistd.h> 11 #include <inttypes.h> 12 13 #include <sys/queue.h> 14 #include <sys/stat.h> 15 16 #include <rte_common.h> 17 #include <rte_byteorder.h> 18 #include <rte_log.h> 19 #include <rte_debug.h> 20 #include <rte_cycles.h> 21 #include <rte_memory.h> 22 #include <rte_launch.h> 23 #include <rte_eal.h> 24 #include <rte_per_lcore.h> 25 #include <rte_lcore.h> 26 #include <rte_branch_prediction.h> 27 #include <rte_memcpy.h> 28 #include <rte_mempool.h> 29 #include <rte_mbuf.h> 30 #include <rte_interrupts.h> 31 #include <rte_ether.h> 32 #include <rte_ethdev.h> 33 #include <rte_string_fns.h> 34 #include <rte_flow.h> 35 36 #include "testpmd.h" 37 38 /* 39 * Forwarding of packets in I/O mode. 40 * Forward packets "as-is". 41 * This is the fastest possible forwarding operation, as it does not access 42 * to packets data. 43 */ 44 static bool pkt_burst_io_forward(struct fwd_stream * fs)45pkt_burst_io_forward(struct fwd_stream *fs) 46 { 47 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 48 uint16_t nb_rx; 49 50 /* 51 * Receive a burst of packets and forward them. 52 */ 53 nb_rx = common_fwd_stream_receive(fs, pkts_burst, nb_pkt_per_burst); 54 if (unlikely(nb_rx == 0)) 55 return false; 56 57 common_fwd_stream_transmit(fs, pkts_burst, nb_rx); 58 59 return true; 60 } 61 62 struct fwd_engine io_fwd_engine = { 63 .fwd_mode_name = "io", 64 .stream_init = common_fwd_stream_init, 65 .packet_fwd = pkt_burst_io_forward, 66 }; 67