1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2013 Tilera Corporation. All rights reserved. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of Tilera Corporation nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 * 33 */ 34 35 #include <stdarg.h> 36 #include <string.h> 37 #include <stdio.h> 38 #include <errno.h> 39 #include <stdint.h> 40 #include <unistd.h> 41 #include <inttypes.h> 42 43 #include <sys/queue.h> 44 #include <sys/stat.h> 45 46 #include <rte_common.h> 47 #include <rte_byteorder.h> 48 #include <rte_log.h> 49 #include <rte_debug.h> 50 #include <rte_cycles.h> 51 #include <rte_memory.h> 52 #include <rte_memcpy.h> 53 #include <rte_memzone.h> 54 #include <rte_launch.h> 55 #include <rte_eal.h> 56 #include <rte_per_lcore.h> 57 #include <rte_lcore.h> 58 #include <rte_atomic.h> 59 #include <rte_branch_prediction.h> 60 #include <rte_ring.h> 61 #include <rte_memory.h> 62 #include <rte_mempool.h> 63 #include <rte_mbuf.h> 64 #include <rte_interrupts.h> 65 #include <rte_pci.h> 66 #include <rte_ether.h> 67 #include <rte_ethdev.h> 68 #include <rte_ip.h> 69 #include <rte_tcp.h> 70 #include <rte_udp.h> 71 #include <rte_string_fns.h> 72 73 #include "testpmd.h" 74 75 /* hardcoded configuration (for now) */ 76 static unsigned cfg_n_flows = 1024; 77 static unsigned cfg_pkt_size = 300; 78 static uint32_t cfg_ip_src = IPv4(10, 254, 0, 0); 79 static uint32_t cfg_ip_dst = IPv4(10, 253, 0, 0); 80 static uint16_t cfg_udp_src = 1000; 81 static uint16_t cfg_udp_dst = 1001; 82 static struct ether_addr cfg_ether_src = 83 {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x00 }}; 84 static struct ether_addr cfg_ether_dst = 85 {{ 0x00, 0x01, 0x02, 0x03, 0x04, 0x01 }}; 86 87 #define IP_DEFTTL 64 /* from RFC 1340. */ 88 #define IP_VERSION 0x40 89 #define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */ 90 #define IP_VHL_DEF (IP_VERSION | IP_HDRLEN) 91 92 static inline struct rte_mbuf * 93 tx_mbuf_alloc(struct rte_mempool *mp) 94 { 95 struct rte_mbuf *m; 96 97 m = __rte_mbuf_raw_alloc(mp); 98 __rte_mbuf_sanity_check_raw(m, 0); 99 return (m); 100 } 101 102 103 static inline uint16_t 104 ip_sum(const uint16_t *hdr, int hdr_len) 105 { 106 uint32_t sum = 0; 107 108 while (hdr_len > 1) 109 { 110 sum += *hdr++; 111 if (sum & 0x80000000) 112 sum = (sum & 0xFFFF) + (sum >> 16); 113 hdr_len -= 2; 114 } 115 116 while (sum >> 16) 117 sum = (sum & 0xFFFF) + (sum >> 16); 118 119 return ~sum; 120 } 121 122 /* 123 * Multi-flow generation mode. 124 * 125 * We originate a bunch of flows (varying destination IP addresses), and 126 * terminate receive traffic. Received traffic is simply discarded, but we 127 * still do so in order to maintain traffic statistics. 128 */ 129 static void 130 pkt_burst_flow_gen(struct fwd_stream *fs) 131 { 132 unsigned pkt_size = cfg_pkt_size - 4; /* Adjust FCS */ 133 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 134 struct rte_mempool *mbp; 135 struct rte_mbuf *pkt; 136 struct ether_hdr *eth_hdr; 137 struct ipv4_hdr *ip_hdr; 138 struct udp_hdr *udp_hdr; 139 uint16_t vlan_tci; 140 uint16_t ol_flags; 141 uint16_t nb_rx; 142 uint16_t nb_tx; 143 uint16_t nb_pkt; 144 uint16_t i; 145 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 146 uint64_t start_tsc; 147 uint64_t end_tsc; 148 uint64_t core_cycles; 149 #endif 150 static int next_flow = 0; 151 152 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 153 start_tsc = rte_rdtsc(); 154 #endif 155 156 /* Receive a burst of packets and discard them. */ 157 nb_rx = rte_eth_rx_burst(fs->rx_port, fs->rx_queue, pkts_burst, 158 nb_pkt_per_burst); 159 fs->rx_packets += nb_rx; 160 161 for (i = 0; i < nb_rx; i++) 162 rte_pktmbuf_free(pkts_burst[i]); 163 164 mbp = current_fwd_lcore()->mbp; 165 vlan_tci = ports[fs->tx_port].tx_vlan_id; 166 ol_flags = ports[fs->tx_port].tx_ol_flags; 167 168 for (nb_pkt = 0; nb_pkt < nb_pkt_per_burst; nb_pkt++) { 169 pkt = tx_mbuf_alloc(mbp); 170 if (!pkt) 171 break; 172 173 pkt->data_len = pkt_size; 174 pkt->next = NULL; 175 176 /* Initialize Ethernet header. */ 177 eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *); 178 ether_addr_copy(&cfg_ether_dst, ð_hdr->d_addr); 179 ether_addr_copy(&cfg_ether_src, ð_hdr->s_addr); 180 eth_hdr->ether_type = rte_cpu_to_be_16(ETHER_TYPE_IPv4); 181 182 /* Initialize IP header. */ 183 ip_hdr = (struct ipv4_hdr *)(eth_hdr + 1); 184 memset(ip_hdr, 0, sizeof(*ip_hdr)); 185 ip_hdr->version_ihl = IP_VHL_DEF; 186 ip_hdr->type_of_service = 0; 187 ip_hdr->fragment_offset = 0; 188 ip_hdr->time_to_live = IP_DEFTTL; 189 ip_hdr->next_proto_id = IPPROTO_UDP; 190 ip_hdr->packet_id = 0; 191 ip_hdr->src_addr = rte_cpu_to_be_32(cfg_ip_src); 192 ip_hdr->dst_addr = rte_cpu_to_be_32(cfg_ip_dst + 193 next_flow); 194 ip_hdr->total_length = RTE_CPU_TO_BE_16(pkt_size - 195 sizeof(*eth_hdr)); 196 ip_hdr->hdr_checksum = ip_sum((uint16_t *)ip_hdr, 197 sizeof(*ip_hdr)); 198 199 /* Initialize UDP header. */ 200 udp_hdr = (struct udp_hdr *)(ip_hdr + 1); 201 udp_hdr->src_port = rte_cpu_to_be_16(cfg_udp_src); 202 udp_hdr->dst_port = rte_cpu_to_be_16(cfg_udp_dst); 203 udp_hdr->dgram_cksum = 0; /* No UDP checksum. */ 204 udp_hdr->dgram_len = RTE_CPU_TO_BE_16(pkt_size - 205 sizeof(*eth_hdr) - 206 sizeof(*ip_hdr)); 207 pkt->nb_segs = 1; 208 pkt->pkt_len = pkt_size; 209 pkt->ol_flags = ol_flags; 210 pkt->vlan_tci = vlan_tci; 211 pkt->l2_len = sizeof(struct ether_hdr); 212 pkt->l3_len = sizeof(struct ipv4_hdr); 213 pkts_burst[nb_pkt] = pkt; 214 215 next_flow = (next_flow + 1) % cfg_n_flows; 216 } 217 218 nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_pkt); 219 fs->tx_packets += nb_tx; 220 221 #ifdef RTE_TEST_PMD_RECORD_BURST_STATS 222 fs->tx_burst_stats.pkt_burst_spread[nb_tx]++; 223 #endif 224 if (unlikely(nb_tx < nb_pkt)) { 225 /* Back out the flow counter. */ 226 next_flow -= (nb_pkt - nb_tx); 227 while (next_flow < 0) 228 next_flow += cfg_n_flows; 229 230 do { 231 rte_pktmbuf_free(pkts_burst[nb_tx]); 232 } while (++nb_tx < nb_pkt); 233 } 234 #ifdef RTE_TEST_PMD_RECORD_CORE_CYCLES 235 end_tsc = rte_rdtsc(); 236 core_cycles = (end_tsc - start_tsc); 237 fs->core_cycles = (uint64_t) (fs->core_cycles + core_cycles); 238 #endif 239 } 240 241 struct fwd_engine flow_gen_engine = { 242 .fwd_mode_name = "flowgen", 243 .port_fwd_begin = NULL, 244 .port_fwd_end = NULL, 245 .packet_fwd = pkt_burst_flow_gen, 246 }; 247