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 0.0.XXX.0 defines traffic class 24 * Destination IP host (0.0.0.XXX) defines queue 25 * Values below define offset to each field from start of frame 26 */ 27 #define SUBPORT_OFFSET 7 28 #define PIPE_OFFSET 9 29 #define TC_OFFSET 20 30 #define QUEUE_OFFSET 20 31 #define COLOR_OFFSET 19 32 33 static inline int 34 get_pkt_sched(struct rte_mbuf *m, uint32_t *subport, uint32_t *pipe, 35 uint32_t *traffic_class, uint32_t *queue, uint32_t *color) 36 { 37 uint16_t *pdata = rte_pktmbuf_mtod(m, uint16_t *); 38 39 *subport = (rte_be_to_cpu_16(pdata[SUBPORT_OFFSET]) & 0x0FFF) & 40 (port_params.n_subports_per_port - 1); /* Outer VLAN ID*/ 41 *pipe = (rte_be_to_cpu_16(pdata[PIPE_OFFSET]) & 0x0FFF) & 42 (port_params.n_pipes_per_subport - 1); /* Inner VLAN ID */ 43 *traffic_class = (pdata[QUEUE_OFFSET] & 0x0F) & 44 (RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE - 1); /* Destination IP */ 45 *queue = ((pdata[QUEUE_OFFSET] >> 8) & 0x0F) & 46 (RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS - 1) ; /* Destination IP */ 47 *color = pdata[COLOR_OFFSET] & 0x03; /* Destination IP */ 48 49 return 0; 50 } 51 52 void 53 app_rx_thread(struct thread_conf **confs) 54 { 55 uint32_t i, nb_rx; 56 struct rte_mbuf *rx_mbufs[burst_conf.rx_burst] __rte_cache_aligned; 57 struct thread_conf *conf; 58 int conf_idx = 0; 59 60 uint32_t subport; 61 uint32_t pipe; 62 uint32_t traffic_class; 63 uint32_t queue; 64 uint32_t color; 65 66 while ((conf = confs[conf_idx])) { 67 nb_rx = rte_eth_rx_burst(conf->rx_port, conf->rx_queue, rx_mbufs, 68 burst_conf.rx_burst); 69 70 if (likely(nb_rx != 0)) { 71 APP_STATS_ADD(conf->stat.nb_rx, nb_rx); 72 73 for(i = 0; i < nb_rx; i++) { 74 get_pkt_sched(rx_mbufs[i], 75 &subport, &pipe, &traffic_class, &queue, &color); 76 rte_sched_port_pkt_write(conf->sched_port, 77 rx_mbufs[i], 78 subport, pipe, 79 traffic_class, queue, 80 (enum rte_meter_color) color); 81 } 82 83 if (unlikely(rte_ring_sp_enqueue_bulk(conf->rx_ring, 84 (void **)rx_mbufs, nb_rx, NULL) == 0)) { 85 for(i = 0; i < nb_rx; i++) { 86 rte_pktmbuf_free(rx_mbufs[i]); 87 88 APP_STATS_ADD(conf->stat.nb_drop, 1); 89 } 90 } 91 } 92 conf_idx++; 93 if (confs[conf_idx] == NULL) 94 conf_idx = 0; 95 } 96 } 97 98 99 100 /* Send the packet to an output interface 101 * For performance reason function returns number of packets dropped, not sent, 102 * so 0 means that all packets were sent successfully 103 */ 104 105 static inline void 106 app_send_burst(struct thread_conf *qconf) 107 { 108 struct rte_mbuf **mbufs; 109 uint32_t n, ret; 110 111 mbufs = (struct rte_mbuf **)qconf->m_table; 112 n = qconf->n_mbufs; 113 114 do { 115 ret = rte_eth_tx_burst(qconf->tx_port, qconf->tx_queue, mbufs, (uint16_t)n); 116 /* we cannot drop the packets, so re-send */ 117 /* update number of packets to be sent */ 118 n -= ret; 119 mbufs = (struct rte_mbuf **)&mbufs[ret]; 120 } while (n); 121 } 122 123 124 /* Send the packet to an output interface */ 125 static void 126 app_send_packets(struct thread_conf *qconf, struct rte_mbuf **mbufs, uint32_t nb_pkt) 127 { 128 uint32_t i, len; 129 130 len = qconf->n_mbufs; 131 for(i = 0; i < nb_pkt; i++) { 132 qconf->m_table[len] = mbufs[i]; 133 len++; 134 /* enough pkts to be sent */ 135 if (unlikely(len == burst_conf.tx_burst)) { 136 qconf->n_mbufs = len; 137 app_send_burst(qconf); 138 len = 0; 139 } 140 } 141 142 qconf->n_mbufs = len; 143 } 144 145 void 146 app_tx_thread(struct thread_conf **confs) 147 { 148 struct rte_mbuf *mbufs[burst_conf.qos_dequeue]; 149 struct thread_conf *conf; 150 int conf_idx = 0; 151 int retval; 152 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; 153 154 while ((conf = confs[conf_idx])) { 155 retval = rte_ring_sc_dequeue_bulk(conf->tx_ring, (void **)mbufs, 156 burst_conf.qos_dequeue, NULL); 157 if (likely(retval != 0)) { 158 app_send_packets(conf, mbufs, burst_conf.qos_dequeue); 159 160 conf->counter = 0; /* reset empty read loop counter */ 161 } 162 163 conf->counter++; 164 165 /* drain ring and TX queues */ 166 if (unlikely(conf->counter > drain_tsc)) { 167 /* now check is there any packets left to be transmitted */ 168 if (conf->n_mbufs != 0) { 169 app_send_burst(conf); 170 171 conf->n_mbufs = 0; 172 } 173 conf->counter = 0; 174 } 175 176 conf_idx++; 177 if (confs[conf_idx] == NULL) 178 conf_idx = 0; 179 } 180 } 181 182 183 void 184 app_worker_thread(struct thread_conf **confs) 185 { 186 struct rte_mbuf *mbufs[burst_conf.ring_burst]; 187 struct thread_conf *conf; 188 int conf_idx = 0; 189 190 while ((conf = confs[conf_idx])) { 191 uint32_t nb_pkt; 192 193 /* Read packet from the ring */ 194 nb_pkt = rte_ring_sc_dequeue_burst(conf->rx_ring, (void **)mbufs, 195 burst_conf.ring_burst, NULL); 196 if (likely(nb_pkt)) { 197 int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs, 198 nb_pkt); 199 200 APP_STATS_ADD(conf->stat.nb_drop, nb_pkt - nb_sent); 201 APP_STATS_ADD(conf->stat.nb_rx, nb_pkt); 202 } 203 204 nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs, 205 burst_conf.qos_dequeue); 206 if (likely(nb_pkt > 0)) 207 while (rte_ring_sp_enqueue_bulk(conf->tx_ring, 208 (void **)mbufs, nb_pkt, NULL) == 0) 209 ; /* empty body */ 210 211 conf_idx++; 212 if (confs[conf_idx] == NULL) 213 conf_idx = 0; 214 } 215 } 216 217 218 void 219 app_mixed_thread(struct thread_conf **confs) 220 { 221 struct rte_mbuf *mbufs[burst_conf.ring_burst]; 222 struct thread_conf *conf; 223 int conf_idx = 0; 224 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US; 225 226 while ((conf = confs[conf_idx])) { 227 uint32_t nb_pkt; 228 229 /* Read packet from the ring */ 230 nb_pkt = rte_ring_sc_dequeue_burst(conf->rx_ring, (void **)mbufs, 231 burst_conf.ring_burst, NULL); 232 if (likely(nb_pkt)) { 233 int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs, 234 nb_pkt); 235 236 APP_STATS_ADD(conf->stat.nb_drop, nb_pkt - nb_sent); 237 APP_STATS_ADD(conf->stat.nb_rx, nb_pkt); 238 } 239 240 241 nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs, 242 burst_conf.qos_dequeue); 243 if (likely(nb_pkt > 0)) { 244 app_send_packets(conf, mbufs, nb_pkt); 245 246 conf->counter = 0; /* reset empty read loop counter */ 247 } 248 249 conf->counter++; 250 251 /* drain ring and TX queues */ 252 if (unlikely(conf->counter > drain_tsc)) { 253 254 /* now check is there any packets left to be transmitted */ 255 if (conf->n_mbufs != 0) { 256 app_send_burst(conf); 257 258 conf->n_mbufs = 0; 259 } 260 conf->counter = 0; 261 } 262 263 conf_idx++; 264 if (confs[conf_idx] == NULL) 265 conf_idx = 0; 266 } 267 } 268