--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <stdint.h>
+
+#include <rte_log.h>
+#include <rte_mbuf.h>
+#include <rte_malloc.h>
+#include <rte_cycles.h>
+#include <rte_ethdev.h>
+#include <rte_memcpy.h>
+#include <rte_byteorder.h>
+#include <rte_branch_prediction.h>
+#include <rte_sched.h>
+
+#include "main.h"
+
+/*
+ * QoS parameters are encoded as follows:
+ * Outer VLAN ID defines subport
+ * Inner VLAN ID defines pipe
+ * Destination IP 0.0.XXX.0 defines traffic class
+ * Destination IP host (0.0.0.XXX) defines queue
+ * Values below define offset to each field from start of frame
+ */
+#define SUBPORT_OFFSET 7
+#define PIPE_OFFSET 9
+#define TC_OFFSET 20
+#define QUEUE_OFFSET 20
+#define COLOR_OFFSET 19
+
+static inline int
+get_pkt_sched(struct rte_mbuf *m, uint32_t *subport, uint32_t *pipe,
+ uint32_t *traffic_class, uint32_t *queue, uint32_t *color)
+{
+ uint16_t *pdata = rte_pktmbuf_mtod(m, uint16_t *);
+
+ *subport = (rte_be_to_cpu_16(pdata[SUBPORT_OFFSET]) & 0x0FFF) &
+ (port_params.n_subports_per_port - 1); /* Outer VLAN ID*/
+ *pipe = (rte_be_to_cpu_16(pdata[PIPE_OFFSET]) & 0x0FFF) &
+ (port_params.n_pipes_per_subport - 1); /* Inner VLAN ID */
+ *traffic_class = (pdata[QUEUE_OFFSET] & 0x0F) &
+ (RTE_SCHED_TRAFFIC_CLASSES_PER_PIPE - 1); /* Destination IP */
+ *queue = ((pdata[QUEUE_OFFSET] >> 8) & 0x0F) &
+ (RTE_SCHED_QUEUES_PER_TRAFFIC_CLASS - 1) ; /* Destination IP */
+ *color = pdata[COLOR_OFFSET] & 0x03; /* Destination IP */
+
+ return 0;
+}
+
+void
+app_rx_thread(struct thread_conf **confs)
+{
+ uint32_t i, nb_rx;
+ struct rte_mbuf *rx_mbufs[burst_conf.rx_burst] __rte_cache_aligned;
+ struct thread_conf *conf;
+ int conf_idx = 0;
+
+ uint32_t subport;
+ uint32_t pipe;
+ uint32_t traffic_class;
+ uint32_t queue;
+ uint32_t color;
+
+ while ((conf = confs[conf_idx])) {
+ nb_rx = rte_eth_rx_burst(conf->rx_port, conf->rx_queue, rx_mbufs,
+ burst_conf.rx_burst);
+
+ if (likely(nb_rx != 0)) {
+ APP_STATS_ADD(conf->stat.nb_rx, nb_rx);
+
+ for(i = 0; i < nb_rx; i++) {
+ get_pkt_sched(rx_mbufs[i],
+ &subport, &pipe, &traffic_class, &queue, &color);
+ rte_sched_port_pkt_write(rx_mbufs[i], subport, pipe,
+ traffic_class, queue, (enum rte_meter_color) color);
+ }
+
+ if (unlikely(rte_ring_sp_enqueue_bulk(conf->rx_ring,
+ (void **)rx_mbufs, nb_rx) != 0)) {
+ for(i = 0; i < nb_rx; i++) {
+ rte_pktmbuf_free(rx_mbufs[i]);
+
+ APP_STATS_ADD(conf->stat.nb_drop, 1);
+ }
+ }
+ }
+ conf_idx++;
+ if (confs[conf_idx] == NULL)
+ conf_idx = 0;
+ }
+}
+
+
+
+/* Send the packet to an output interface
+ * For performance reason function returns number of packets dropped, not sent,
+ * so 0 means that all packets were sent successfully
+ */
+
+static inline void
+app_send_burst(struct thread_conf *qconf)
+{
+ struct rte_mbuf **mbufs;
+ uint32_t n, ret;
+
+ mbufs = (struct rte_mbuf **)qconf->m_table;
+ n = qconf->n_mbufs;
+
+ do {
+ ret = rte_eth_tx_burst(qconf->tx_port, qconf->tx_queue, mbufs, (uint16_t)n);
+ /* we cannot drop the packets, so re-send */
+ /* update number of packets to be sent */
+ n -= ret;
+ mbufs = (struct rte_mbuf **)&mbufs[ret];
+ } while (n);
+}
+
+
+/* Send the packet to an output interface */
+static void
+app_send_packets(struct thread_conf *qconf, struct rte_mbuf **mbufs, uint32_t nb_pkt)
+{
+ uint32_t i, len;
+
+ len = qconf->n_mbufs;
+ for(i = 0; i < nb_pkt; i++) {
+ qconf->m_table[len] = mbufs[i];
+ len++;
+ /* enough pkts to be sent */
+ if (unlikely(len == burst_conf.tx_burst)) {
+ qconf->n_mbufs = len;
+ app_send_burst(qconf);
+ len = 0;
+ }
+ }
+
+ qconf->n_mbufs = len;
+}
+
+void
+app_tx_thread(struct thread_conf **confs)
+{
+ struct rte_mbuf *mbufs[burst_conf.qos_dequeue];
+ struct thread_conf *conf;
+ int conf_idx = 0;
+ int retval;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
+
+ while ((conf = confs[conf_idx])) {
+ retval = rte_ring_sc_dequeue_bulk(conf->tx_ring, (void **)mbufs,
+ burst_conf.qos_dequeue);
+ if (likely(retval == 0)) {
+ app_send_packets(conf, mbufs, burst_conf.qos_dequeue);
+
+ conf->counter = 0; /* reset empty read loop counter */
+ }
+
+ conf->counter++;
+
+ /* drain ring and TX queues */
+ if (unlikely(conf->counter > drain_tsc)) {
+ /* now check is there any packets left to be transmitted */
+ if (conf->n_mbufs != 0) {
+ app_send_burst(conf);
+
+ conf->n_mbufs = 0;
+ }
+ conf->counter = 0;
+ }
+
+ conf_idx++;
+ if (confs[conf_idx] == NULL)
+ conf_idx = 0;
+ }
+}
+
+
+void
+app_worker_thread(struct thread_conf **confs)
+{
+ struct rte_mbuf *mbufs[burst_conf.ring_burst];
+ struct thread_conf *conf;
+ int conf_idx = 0;
+
+ while ((conf = confs[conf_idx])) {
+ uint32_t nb_pkt;
+ int retval;
+
+ /* Read packet from the ring */
+ retval = rte_ring_sc_dequeue_bulk(conf->rx_ring, (void **)mbufs,
+ burst_conf.ring_burst);
+ if (likely(retval == 0)) {
+ int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs,
+ burst_conf.ring_burst);
+
+ APP_STATS_ADD(conf->stat.nb_drop, burst_conf.ring_burst - nb_sent);
+ APP_STATS_ADD(conf->stat.nb_rx, burst_conf.ring_burst);
+ }
+
+ nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs,
+ burst_conf.qos_dequeue);
+ if (likely(nb_pkt > 0))
+ while (rte_ring_sp_enqueue_bulk(conf->tx_ring, (void **)mbufs, nb_pkt) != 0);
+
+ conf_idx++;
+ if (confs[conf_idx] == NULL)
+ conf_idx = 0;
+ }
+}
+
+
+void
+app_mixed_thread(struct thread_conf **confs)
+{
+ struct rte_mbuf *mbufs[burst_conf.ring_burst];
+ struct thread_conf *conf;
+ int conf_idx = 0;
+ const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
+
+ while ((conf = confs[conf_idx])) {
+ uint32_t nb_pkt;
+ int retval;
+
+ /* Read packet from the ring */
+ retval = rte_ring_sc_dequeue_bulk(conf->rx_ring, (void **)mbufs,
+ burst_conf.ring_burst);
+ if (likely(retval == 0)) {
+ int nb_sent = rte_sched_port_enqueue(conf->sched_port, mbufs,
+ burst_conf.ring_burst);
+
+ APP_STATS_ADD(conf->stat.nb_drop, burst_conf.ring_burst - nb_sent);
+ APP_STATS_ADD(conf->stat.nb_rx, burst_conf.ring_burst);
+ }
+
+
+ nb_pkt = rte_sched_port_dequeue(conf->sched_port, mbufs,
+ burst_conf.qos_dequeue);
+ if (likely(nb_pkt > 0)) {
+ app_send_packets(conf, mbufs, nb_pkt);
+
+ conf->counter = 0; /* reset empty read loop counter */
+ }
+
+ conf->counter++;
+
+ /* drain ring and TX queues */
+ if (unlikely(conf->counter > drain_tsc)) {
+
+ /* now check is there any packets left to be transmitted */
+ if (conf->n_mbufs != 0) {
+ app_send_burst(conf);
+
+ conf->n_mbufs = 0;
+ }
+ conf->counter = 0;
+ }
+
+ conf_idx++;
+ if (confs[conf_idx] == NULL)
+ conf_idx = 0;
+ }
+}
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