1 /*- 2 * BSD LICENSE 3 * 4 * Copyright(c) 2010-2014 Intel 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 Intel 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 #include <stdint.h> 35 36 #include <rte_log.h> 37 #include <rte_mbuf.h> 38 #include <rte_malloc.h> 39 #include <rte_cycles.h> 40 #include <rte_ethdev.h> 41 #include <rte_memcpy.h> 42 #include <rte_byteorder.h> 43 #include <rte_branch_prediction.h> 44 #include <rte_sched.h> 45 46 #include "main.h" 47 48 /* 49 * QoS parameters are encoded as follows: 50 * Outer VLAN ID defines subport 51 * Inner VLAN ID defines pipe 52 * Destination IP 0.0.XXX.0 defines traffic class 53 * Destination IP host (0.0.0.XXX) defines queue 54 * Values below define offset to each field from start of frame 55 */ 56 #define SUBPORT_OFFSET 7 57 #define PIPE_OFFSET 9 58 #define TC_OFFSET 20 59 #define QUEUE_OFFSET 20 60 #define COLOR_OFFSET 19 61 62 static inline int 63 get_pkt_sched(struct rte_mbuf *m, uint32_t *subport, uint32_t *pipe, 64 uint32_t *traffic_class, uint32_t *queue, uint32_t *color) 65 { 66 uint16_t *pdata = rte_pktmbuf_mtod(m, uint16_t *); 67 68 *subport = (rte_be_to_cpu_16(pdata[SUBPORT_OFFSET]) & 0x0FFF) & 69 (port_params.n_subports_per_port - 1); /* Outer VLAN ID*/ 70 *pipe = (rte_be_to_cpu_16(pdata[PIPE_OFFSET]) & 0x0FFF) & 71 (port_params.n_pipes_per_subport - 1); /* Inner VLAN ID */ 72 *traffic_class = (pdata[QUEUE_OFFSET] & 0x0F) & 73 (RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE - 1); /* Destination IP */ 74 *queue = ((pdata[QUEUE_OFFSET] >> 8) & 0x0F) & 75 (RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS - 1) ; /* Destination IP */ 76 *color = pdata[COLOR_OFFSET] & 0x03; /* Destination IP */ 77 78 return 0; 79 } 80 81 void 82 app_rx_thread(struct thread_conf **confs) 83 { 84 uint32_t i, nb_rx; 85 struct rte_mbuf *rx_mbufs[burst_conf.rx_burst] __rte_cache_aligned; 86 struct thread_conf *conf; 87 int conf_idx = 0; 88 89 uint32_t subport; 90 uint32_t pipe; 91 uint32_t traffic_class; 92 uint32_t queue; 93 uint32_t color; 94 95 while ((conf = confs[conf_idx])) { 96 nb_rx = rte_eth_rx_burst(conf->rx_port, conf->rx_queue, rx_mbufs, 97 burst_conf.rx_burst); 98 99 if (likely(nb_rx != 0)) { 100 APP_STATS_ADD(conf->stat.nb_rx, nb_rx); 101 102 for(i = 0; i < nb_rx; i++) { 103 get_pkt_sched(rx_mbufs[i], 104 &subport, &pipe, &traffic_class, &queue, &color); 105 rte_sched_port_pkt_write(rx_mbufs[i], subport, pipe, 106 traffic_class, queue, (enum rte_meter_color) color); 107 } 108 109 if (unlikely(rte_ring_sp_enqueue_bulk(conf->rx_ring, 110 (void **)rx_mbufs, nb_rx, NULL) == 0)) { 111 for(i = 0; i < nb_rx; i++) { 112 rte_pktmbuf_free(rx_mbufs[i]); 113 114 APP_STATS_ADD(conf->stat.nb_drop, 1); 115 } 116 } 117 } 118 conf_idx++; 119 if (confs[conf_idx] == NULL) 120 conf_idx = 0; 121 } 122 } 123 124 125 126 /* Send the packet to an output interface 127 * For performance reason function returns number of packets dropped, not sent, 128 * so 0 means that all packets were sent successfully 129 */ 130 131 static inline void 132 app_send_burst(struct thread_conf *qconf) 133 { 134 struct rte_mbuf **mbufs; 135 uint32_t n, ret; 136 137 mbufs = (struct rte_mbuf **)qconf->m_table; 138 n = qconf->n_mbufs; 139 140 do { 141 ret = rte_eth_tx_burst(qconf->tx_port, qconf->tx_queue, mbufs, (uint16_t)n); 142 /* we cannot drop the packets, so re-send */ 143 /* update number of packets to be sent */ 144 n -= ret; 145 mbufs = (struct rte_mbuf **)&mbufs[ret]; 146 } while (n); 147 } 148 149 150 /* Send the packet to an output interface */ 151 static void 152 app_send_packets(struct thread_conf *qconf, struct rte_mbuf **mbufs, uint32_t nb_pkt) 153 { 154 uint32_t i, len; 155 156 len = qconf->n_mbufs; 157 for(i = 0; i < nb_pkt; i++) { 158 qconf->m_table[len] = mbufs[i]; 159 len++; 160 /* enough pkts to be sent */ 161 if (unlikely(len == burst_conf.tx_burst)) { 162 qconf->n_mbufs = len; 163 app_send_burst(qconf); 164 len = 0; 165 } 166 } 167 168 qconf->n_mbufs = len; 169 } 170 171 void 172 app_tx_thread(struct thread_conf **confs) 173 { 174 struct rte_mbuf *mbufs[burst_conf.qos_dequeue]; 175 struct thread_conf *conf; 176 int conf_idx = 0; 177 int retval; 178 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; 179 180 while ((conf = confs[conf_idx])) { 181 retval = rte_ring_sc_dequeue_bulk(conf->tx_ring, (void **)mbufs, 182 burst_conf.qos_dequeue, NULL); 183 if (likely(retval != 0)) { 184 app_send_packets(conf, mbufs, burst_conf.qos_dequeue); 185 186 conf->counter = 0; /* reset empty read loop counter */ 187 } 188 189 conf->counter++; 190 191 /* drain ring and TX queues */ 192 if (unlikely(conf->counter > drain_tsc)) { 193 /* now check is there any packets left to be transmitted */ 194 if (conf->n_mbufs != 0) { 195 app_send_burst(conf); 196 197 conf->n_mbufs = 0; 198 } 199 conf->counter = 0; 200 } 201 202 conf_idx++; 203 if (confs[conf_idx] == NULL) 204 conf_idx = 0; 205 } 206 } 207 208 209 void 210 app_worker_thread(struct thread_conf **confs) 211 { 212 struct rte_mbuf *mbufs[burst_conf.ring_burst]; 213 struct thread_conf *conf; 214 int conf_idx = 0; 215 216 while ((conf = confs[conf_idx])) { 217 uint32_t nb_pkt; 218 219 /* Read packet from the ring */ 220 nb_pkt = rte_ring_sc_dequeue_burst(conf->rx_ring, (void **)mbufs, 221 burst_conf.ring_burst, NULL); 222 if (likely(nb_pkt)) { 223 int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs, 224 nb_pkt); 225 226 APP_STATS_ADD(conf->stat.nb_drop, nb_pkt - nb_sent); 227 APP_STATS_ADD(conf->stat.nb_rx, nb_pkt); 228 } 229 230 nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs, 231 burst_conf.qos_dequeue); 232 if (likely(nb_pkt > 0)) 233 while (rte_ring_sp_enqueue_bulk(conf->tx_ring, 234 (void **)mbufs, nb_pkt, NULL) == 0) 235 ; /* empty body */ 236 237 conf_idx++; 238 if (confs[conf_idx] == NULL) 239 conf_idx = 0; 240 } 241 } 242 243 244 void 245 app_mixed_thread(struct thread_conf **confs) 246 { 247 struct rte_mbuf *mbufs[burst_conf.ring_burst]; 248 struct thread_conf *conf; 249 int conf_idx = 0; 250 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; 251 252 while ((conf = confs[conf_idx])) { 253 uint32_t nb_pkt; 254 255 /* Read packet from the ring */ 256 nb_pkt = rte_ring_sc_dequeue_burst(conf->rx_ring, (void **)mbufs, 257 burst_conf.ring_burst, NULL); 258 if (likely(nb_pkt)) { 259 int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs, 260 nb_pkt); 261 262 APP_STATS_ADD(conf->stat.nb_drop, nb_pkt - nb_sent); 263 APP_STATS_ADD(conf->stat.nb_rx, nb_pkt); 264 } 265 266 267 nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs, 268 burst_conf.qos_dequeue); 269 if (likely(nb_pkt > 0)) { 270 app_send_packets(conf, mbufs, nb_pkt); 271 272 conf->counter = 0; /* reset empty read loop counter */ 273 } 274 275 conf->counter++; 276 277 /* drain ring and TX queues */ 278 if (unlikely(conf->counter > drain_tsc)) { 279 280 /* now check is there any packets left to be transmitted */ 281 if (conf->n_mbufs != 0) { 282 app_send_burst(conf); 283 284 conf->n_mbufs = 0; 285 } 286 conf->counter = 0; 287 } 288 289 conf_idx++; 290 if (confs[conf_idx] == NULL) 291 conf_idx = 0; 292 } 293 } 294