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