Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>

1 files changed, 293 insertions, 0 deletions

diff --git a/examples/qos_sched/app_thread.c b/examples/qos_sched/app_thread.c
new file mode 100644
index 00000000..3c678cc4
--- /dev/null
+++ b/examples/qos_sched/app_thread.c
@@ -0,0 +1,293 @@
+/*-
+ *   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;
+	}
+}