1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2014 Intel Corporation 3 */ 4 5 #include <stdint.h> 6 7 #include <rte_log.h> 8 #include <rte_mbuf.h> 9 #include <rte_malloc.h> 10 #include <rte_cycles.h> 11 #include <rte_ethdev.h> 12 #include <rte_memcpy.h> 13 #include <rte_byteorder.h> 14 #include <rte_branch_prediction.h> 15 #include <rte_sched.h> 16 17 #include "main.h" 18 19 /* 20 * QoS parameters are encoded as follows: 21 * Outer VLAN ID defines subport 22 * Inner VLAN ID defines pipe 23 * Destination IP host (0.0.0.XXX) defines queue 24 * Values below define offset to each field from start of frame 25 */ 26 #define SUBPORT_OFFSET 7 27 #define PIPE_OFFSET 9 28 #define QUEUE_OFFSET 20 29 #define COLOR_OFFSET 19 30 31 static inline int 32 get_pkt_sched(struct rte_mbuf *m, uint32_t *subport, uint32_t *pipe, 33 uint32_t *traffic_class, uint32_t *queue, uint32_t *color) 34 { 35 uint16_t *pdata = rte_pktmbuf_mtod(m, uint16_t *); 36 uint16_t pipe_queue; 37 38 /* Outer VLAN ID*/ 39 *subport = (rte_be_to_cpu_16(pdata[SUBPORT_OFFSET]) & 0x0FFF) & 40 (port_params.n_subports_per_port - 1); 41 42 /* Inner VLAN ID */ 43 *pipe = (rte_be_to_cpu_16(pdata[PIPE_OFFSET]) & 0x0FFF) & 44 (subport_params[*subport].n_pipes_per_subport_enabled - 1); 45 46 pipe_queue = active_queues[(pdata[QUEUE_OFFSET] >> 8) % n_active_queues]; 47 48 /* Traffic class (Destination IP) */ 49 *traffic_class = pipe_queue > RTE_SCHED_TRAFFIC_CLASS_BE ? 50 RTE_SCHED_TRAFFIC_CLASS_BE : pipe_queue; 51 52 /* Traffic class queue (Destination IP) */ 53 *queue = pipe_queue - *traffic_class; 54 55 /* Color (Destination IP) */ 56 *color = pdata[COLOR_OFFSET] & 0x03; 57 58 return 0; 59 } 60 61 void 62 app_rx_thread(struct thread_conf **confs) 63 { 64 uint32_t i, nb_rx; 65 struct rte_mbuf *rx_mbufs[burst_conf.rx_burst] __rte_cache_aligned; 66 struct thread_conf *conf; 67 int conf_idx = 0; 68 69 uint32_t subport; 70 uint32_t pipe; 71 uint32_t traffic_class; 72 uint32_t queue; 73 uint32_t color; 74 75 while ((conf = confs[conf_idx])) { 76 nb_rx = rte_eth_rx_burst(conf->rx_port, conf->rx_queue, rx_mbufs, 77 burst_conf.rx_burst); 78 79 if (likely(nb_rx != 0)) { 80 APP_STATS_ADD(conf->stat.nb_rx, nb_rx); 81 82 for(i = 0; i < nb_rx; i++) { 83 get_pkt_sched(rx_mbufs[i], 84 &subport, &pipe, &traffic_class, &queue, &color); 85 rte_sched_port_pkt_write(conf->sched_port, 86 rx_mbufs[i], 87 subport, pipe, 88 traffic_class, queue, 89 (enum rte_color) color); 90 } 91 92 if (unlikely(rte_ring_sp_enqueue_bulk(conf->rx_ring, 93 (void **)rx_mbufs, nb_rx, NULL) == 0)) { 94 for(i = 0; i < nb_rx; i++) { 95 rte_pktmbuf_free(rx_mbufs[i]); 96 97 APP_STATS_ADD(conf->stat.nb_drop, 1); 98 } 99 } 100 } 101 conf_idx++; 102 if (confs[conf_idx] == NULL) 103 conf_idx = 0; 104 } 105 } 106 107 108 109 /* Send the packet to an output interface 110 * For performance reason function returns number of packets dropped, not sent, 111 * so 0 means that all packets were sent successfully 112 */ 113 114 static inline void 115 app_send_burst(struct thread_conf *qconf) 116 { 117 struct rte_mbuf **mbufs; 118 uint32_t n, ret; 119 120 mbufs = (struct rte_mbuf **)qconf->m_table; 121 n = qconf->n_mbufs; 122 123 do { 124 ret = rte_eth_tx_burst(qconf->tx_port, qconf->tx_queue, mbufs, (uint16_t)n); 125 /* we cannot drop the packets, so re-send */ 126 /* update number of packets to be sent */ 127 n -= ret; 128 mbufs = (struct rte_mbuf **)&mbufs[ret]; 129 } while (n); 130 } 131 132 133 /* Send the packet to an output interface */ 134 static void 135 app_send_packets(struct thread_conf *qconf, struct rte_mbuf **mbufs, uint32_t nb_pkt) 136 { 137 uint32_t i, len; 138 139 len = qconf->n_mbufs; 140 for(i = 0; i < nb_pkt; i++) { 141 qconf->m_table[len] = mbufs[i]; 142 len++; 143 /* enough pkts to be sent */ 144 if (unlikely(len == burst_conf.tx_burst)) { 145 qconf->n_mbufs = len; 146 app_send_burst(qconf); 147 len = 0; 148 } 149 } 150 151 qconf->n_mbufs = len; 152 } 153 154 void 155 app_tx_thread(struct thread_conf **confs) 156 { 157 struct rte_mbuf *mbufs[burst_conf.qos_dequeue]; 158 struct thread_conf *conf; 159 int conf_idx = 0; 160 int retval; 161 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; 162 163 while ((conf = confs[conf_idx])) { 164 retval = rte_ring_sc_dequeue_bulk(conf->tx_ring, (void **)mbufs, 165 burst_conf.qos_dequeue, NULL); 166 if (likely(retval != 0)) { 167 app_send_packets(conf, mbufs, burst_conf.qos_dequeue); 168 169 conf->counter = 0; /* reset empty read loop counter */ 170 } 171 172 conf->counter++; 173 174 /* drain ring and TX queues */ 175 if (unlikely(conf->counter > drain_tsc)) { 176 /* now check is there any packets left to be transmitted */ 177 if (conf->n_mbufs != 0) { 178 app_send_burst(conf); 179 180 conf->n_mbufs = 0; 181 } 182 conf->counter = 0; 183 } 184 185 conf_idx++; 186 if (confs[conf_idx] == NULL) 187 conf_idx = 0; 188 } 189 } 190 191 192 void 193 app_worker_thread(struct thread_conf **confs) 194 { 195 struct rte_mbuf *mbufs[burst_conf.ring_burst]; 196 struct thread_conf *conf; 197 int conf_idx = 0; 198 199 while ((conf = confs[conf_idx])) { 200 uint32_t nb_pkt; 201 202 /* Read packet from the ring */ 203 nb_pkt = rte_ring_sc_dequeue_burst(conf->rx_ring, (void **)mbufs, 204 burst_conf.ring_burst, NULL); 205 if (likely(nb_pkt)) { 206 int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs, 207 nb_pkt); 208 209 APP_STATS_ADD(conf->stat.nb_drop, nb_pkt - nb_sent); 210 APP_STATS_ADD(conf->stat.nb_rx, nb_pkt); 211 } 212 213 nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs, 214 burst_conf.qos_dequeue); 215 if (likely(nb_pkt > 0)) 216 while (rte_ring_sp_enqueue_bulk(conf->tx_ring, 217 (void **)mbufs, nb_pkt, NULL) == 0) 218 ; /* empty body */ 219 220 conf_idx++; 221 if (confs[conf_idx] == NULL) 222 conf_idx = 0; 223 } 224 } 225 226 227 void 228 app_mixed_thread(struct thread_conf **confs) 229 { 230 struct rte_mbuf *mbufs[burst_conf.ring_burst]; 231 struct thread_conf *conf; 232 int conf_idx = 0; 233 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; 234 235 while ((conf = confs[conf_idx])) { 236 uint32_t nb_pkt; 237 238 /* Read packet from the ring */ 239 nb_pkt = rte_ring_sc_dequeue_burst(conf->rx_ring, (void **)mbufs, 240 burst_conf.ring_burst, NULL); 241 if (likely(nb_pkt)) { 242 int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs, 243 nb_pkt); 244 245 APP_STATS_ADD(conf->stat.nb_drop, nb_pkt - nb_sent); 246 APP_STATS_ADD(conf->stat.nb_rx, nb_pkt); 247 } 248 249 250 nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs, 251 burst_conf.qos_dequeue); 252 if (likely(nb_pkt > 0)) { 253 app_send_packets(conf, mbufs, nb_pkt); 254 255 conf->counter = 0; /* reset empty read loop counter */ 256 } 257 258 conf->counter++; 259 260 /* drain ring and TX queues */ 261 if (unlikely(conf->counter > drain_tsc)) { 262 263 /* now check is there any packets left to be transmitted */ 264 if (conf->n_mbufs != 0) { 265 app_send_burst(conf); 266 267 conf->n_mbufs = 0; 268 } 269 conf->counter = 0; 270 } 271 272 conf_idx++; 273 if (confs[conf_idx] == NULL) 274 conf_idx = 0; 275 } 276 } 277