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examples/l2fwd-ivshmem: import sample application

Browse Source 
This provides a new sample application which demonstrates how
the ivshmem library and EAL capabilities can be used to create
a zero-copy fast-path for packet communication between host
machine and guest vm.

Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
This commit is contained in:
Bruce Richardson 2014-02-11 11:31:03 +00:00 committed by David Marchand
parent 4796ad63ba
commit 6aa4972491
6 changed files with 1659 additions and 0 deletions
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50
examples/l2fwd-ivshmem/Makefile Normal file
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# 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.
ifeq ($(RTE_SDK),)
$(error "Please define RTE_SDK environment variable")
endif
# Default target, can be overriden by command line or environment
RTE_TARGET ?= x86_64-ivshmem-linuxapp-gcc
include $(RTE_SDK)/mk/rte.vars.mk
unexport RTE_SRCDIR RTE_OUTPUT RTE_EXTMK
DIRS-$(CONFIG_RTE_EXEC_ENV_LINUXAPP) += host guest
.PHONY: all clean $(DIRS-y)
all: $(DIRS-y)
clean: $(DIRS-y)
$(DIRS-y):
$(MAKE) -C $@ $(MAKECMDGOALS)

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examples/l2fwd-ivshmem/guest/Makefile Normal file
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# 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.
ifeq ($(RTE_SDK),)
$(error "Please define RTE_SDK environment variable")
endif
# Default target, can be overriden by command line or environment
RTE_TARGET ?= x86_64-ivshmem-linuxapp-gcc
include $(RTE_SDK)/mk/rte.vars.mk
# binary name
APP = guest
# all source are stored in SRCS-y
SRCS-y := guest.c
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS)
include $(RTE_SDK)/mk/rte.extapp.mk

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examples/l2fwd-ivshmem/guest/guest.c Normal file
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/*-
* 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 <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <unistd.h>
#include <getopt.h>
#include <signal.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/queue.h>
#include <sys/file.h>
#include <unistd.h>
#include <limits.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <rte_common.h>
#include <rte_eal_memconfig.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_memzone.h>
#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_launch.h>
#include <rte_atomic.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_pci.h>
#include <rte_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_ring.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_ivshmem.h>
#include "../include/common.h"
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
struct lcore_queue_conf {
unsigned n_rx_port;
unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
struct mbuf_table rx_mbufs[RTE_MAX_ETHPORTS];
struct vm_port_param * port_param[MAX_RX_QUEUE_PER_LCORE];
} __rte_cache_aligned;
static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
/* Print out statistics on packets dropped */
static void
print_stats(void)
{
uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
unsigned portid;
total_packets_dropped = 0;
total_packets_tx = 0;
total_packets_rx = 0;
const char clr[] = { 27, '[', '2', 'J', '\0' };
const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
/* Clear screen and move to top left */
printf("%s%s", clr, topLeft);
printf("\nPort statistics ====================================");
for (portid = 0; portid < ctrl->nb_ports; portid++) {
/* skip ports that are not enabled */
printf("\nStatistics for port %u ------------------------------"
"\nPackets sent: %24"PRIu64
"\nPackets received: %20"PRIu64
"\nPackets dropped: %21"PRIu64,
portid,
ctrl->vm_ports[portid].stats.tx,
ctrl->vm_ports[portid].stats.rx,
ctrl->vm_ports[portid].stats.dropped);
total_packets_dropped += ctrl->vm_ports[portid].stats.dropped;
total_packets_tx += ctrl->vm_ports[portid].stats.tx;
total_packets_rx += ctrl->vm_ports[portid].stats.rx;
}
printf("\nAggregate statistics ==============================="
"\nTotal packets sent: %18"PRIu64
"\nTotal packets received: %14"PRIu64
"\nTotal packets dropped: %15"PRIu64,
total_packets_tx,
total_packets_rx,
total_packets_dropped);
printf("\n====================================================\n");
}
/* display usage */
static void
l2fwd_ivshmem_usage(const char *prgname)
{
printf("%s [EAL options] -- [-q NQ -T PERIOD]\n"
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
" -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
prgname);
}
static unsigned int
l2fwd_ivshmem_parse_nqueue(const char *q_arg)
{
char *end = NULL;
unsigned long n;
/* parse hexadecimal string */
n = strtoul(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return 0;
if (n == 0)
return 0;
if (n >= MAX_RX_QUEUE_PER_LCORE)
return 0;
return n;
}
static int
l2fwd_ivshmem_parse_timer_period(const char *q_arg)
{
char *end = NULL;
int n;
/* parse number string */
n = strtol(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (n >= MAX_TIMER_PERIOD)
return -1;
return n;
}
/* Parse the argument given in the command line of the application */
static int
l2fwd_ivshmem_parse_args(int argc, char **argv)
{
int opt, ret;
char **argvopt;
int option_index;
char *prgname = argv[0];
static struct option lgopts[] = {
{NULL, 0, 0, 0}
};
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "q:p:T:",
lgopts, &option_index)) != EOF) {
switch (opt) {
/* nqueue */
case 'q':
l2fwd_ivshmem_rx_queue_per_lcore = l2fwd_ivshmem_parse_nqueue(optarg);
if (l2fwd_ivshmem_rx_queue_per_lcore == 0) {
printf("invalid queue number\n");
l2fwd_ivshmem_usage(prgname);
return -1;
}
break;
/* timer period */
case 'T':
timer_period = l2fwd_ivshmem_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
if (timer_period < 0) {
printf("invalid timer period\n");
l2fwd_ivshmem_usage(prgname);
return -1;
}
break;
/* long options */
case 0:
l2fwd_ivshmem_usage(prgname);
return -1;
default:
l2fwd_ivshmem_usage(prgname);
return -1;
}
}
if (optind >= 0)
argv[optind-1] = prgname;
ret = optind-1;
optind = 0; /* reset getopt lib */
return ret;
}
/*
* this loop is getting packets from RX rings of each port, and puts them
* into TX rings of destination ports.
*/
static void
fwd_loop(void)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_mbuf **m_table;
struct rte_mbuf *m;
struct rte_ring *rx, *tx;
unsigned lcore_id, len;
uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
unsigned i, j, portid, nb_rx;
struct lcore_queue_conf *qconf;
struct ether_hdr *eth;
void *tmp;
prev_tsc = 0;
timer_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
if (qconf->n_rx_port == 0) {
RTE_LOG(INFO, L2FWD_IVSHMEM, "lcore %u has nothing to do\n", lcore_id);
return;
}
RTE_LOG(INFO, L2FWD_IVSHMEM, "entering main loop on lcore %u\n", lcore_id);
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
RTE_LOG(INFO, L2FWD_IVSHMEM, " -- lcoreid=%u portid=%u\n", lcore_id,
portid);
}
while (ctrl->state == STATE_FWD) {
cur_tsc = rte_rdtsc();
diff_tsc = cur_tsc - prev_tsc;
/*
* Read packet from RX queues and send it to TX queues
*/
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
len = qconf->rx_mbufs[portid].len;
rx = ctrl->vm_ports[portid].rx_ring;
tx = ctrl->vm_ports[portid].dst->tx_ring;
m_table = qconf->rx_mbufs[portid].m_table;
/* if we have something in the queue, try and transmit it down */
if (len != 0) {
/* if we succeed in sending the packets down, mark queue as free */
if (rte_ring_enqueue_bulk(tx, (void**) m_table, len) == 0) {
ctrl->vm_ports[portid].stats.tx += len;
qconf->rx_mbufs[portid].len = 0;
len = 0;
}
}
nb_rx = rte_ring_count(rx);
nb_rx = RTE_MIN(nb_rx, (unsigned) MAX_PKT_BURST);
if (nb_rx == 0)
continue;
/* if we can get packets into the m_table */
if (nb_rx < (RTE_DIM(qconf->rx_mbufs[portid].m_table) - len)) {
/* this situation cannot exist, so if we fail to dequeue, that
* means something went horribly wrong, hence the failure. */
if (rte_ring_dequeue_bulk(rx, (void**) pkts_burst, nb_rx) < 0) {
ctrl->state = STATE_FAIL;
return;
}
ctrl->vm_ports[portid].stats.rx += nb_rx;
/* put packets into the queue */
for (j = 0; j < nb_rx; j++) {
m = pkts_burst[j];
rte_prefetch0(rte_pktmbuf_mtod(m, void *));
m_table[len + j] = m;
eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
/* 02:00:00:00:00:xx */
tmp = &eth->d_addr.addr_bytes[0];
*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)portid << 40);
/* src addr */
ether_addr_copy(&ctrl->vm_ports[portid].dst->ethaddr,
&eth->s_addr);
}
qconf->rx_mbufs[portid].len += nb_rx;
}
}
/* if timer is enabled */
if (timer_period > 0) {
/* advance the timer */
timer_tsc += diff_tsc;
/* if timer has reached its timeout */
if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
/* do this only on master core */
if (lcore_id == rte_get_master_lcore()) {
print_stats();
/* reset the timer */
timer_tsc = 0;
}
}
}
prev_tsc = cur_tsc;
}
}
static int
l2fwd_ivshmem_launch_one_lcore(__attribute__((unused)) void *dummy)
{
fwd_loop();
return 0;
}
int
main(int argc, char **argv)
{
struct lcore_queue_conf *qconf;
const struct rte_memzone * mz;
int ret;
uint8_t portid;
unsigned rx_lcore_id, lcore_id;
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
argc -= ret;
argv += ret;
/* parse application arguments (after the EAL ones) */
ret = l2fwd_ivshmem_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid l2fwd-ivshmem arguments\n");
/* find control structure */
mz = rte_memzone_lookup(CTRL_MZ_NAME);
if (mz == NULL)
rte_exit(EXIT_FAILURE, "Cannot find control memzone\n");
ctrl = (struct ivshmem_ctrl*) mz->addr;
/* lock the ctrl so that we don't have conflicts with anything else */
rte_spinlock_lock(&ctrl->lock);
if (ctrl->state == STATE_FWD)
rte_exit(EXIT_FAILURE, "Forwarding already started!\n");
rx_lcore_id = 0;
qconf = NULL;
/* Initialize the port/queue configuration of each logical core */
for (portid = 0; portid < ctrl->nb_ports; portid++) {
/* get the lcore_id for this port */
while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
lcore_queue_conf[rx_lcore_id].n_rx_port ==
l2fwd_ivshmem_rx_queue_per_lcore) {
rx_lcore_id++;
if (rx_lcore_id >= RTE_MAX_LCORE)
rte_exit(EXIT_FAILURE, "Not enough cores\n");
}
if (qconf != &lcore_queue_conf[rx_lcore_id])
/* Assigned a new logical core in the loop above. */
qconf = &lcore_queue_conf[rx_lcore_id];
qconf->rx_port_list[qconf->n_rx_port] = portid;
qconf->port_param[qconf->n_rx_port] = &ctrl->vm_ports[portid];
qconf->n_rx_port++;
printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
}
sigsetup();
/* indicate that we are ready to forward */
ctrl->state = STATE_FWD;
/* unlock */
rte_spinlock_unlock(&ctrl->lock);
/* launch per-lcore init on every lcore */
rte_eal_mp_remote_launch(l2fwd_ivshmem_launch_one_lcore, NULL, CALL_MASTER);
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
return 0;
}

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# 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.
ifeq ($(RTE_SDK),)
$(error "Please define RTE_SDK environment variable")
endif
# Default target, can be overriden by command line or environment
RTE_TARGET ?= x86_64-ivshmem-linuxapp-gcc
include $(RTE_SDK)/mk/rte.vars.mk
# binary name
APP = host
# all source are stored in SRCS-y
SRCS-y := host.c
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS)
include $(RTE_SDK)/mk/rte.extapp.mk

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/*-
* 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 <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <limits.h>
#include <inttypes.h>
#include <getopt.h>
#include <signal.h>
#include <rte_eal.h>
#include <rte_config.h>
#include <rte_cycles.h>
#include <rte_eal_memconfig.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_string_fns.h>
#include <rte_ivshmem.h>
#include <rte_ring.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include "../include/common.h"
/*
* Configurable number of RX/TX ring descriptors
*/
#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
/*
* RX and TX Prefetch, Host, and Write-back threshold values should be
* carefully set for optimal performance. Consult the network
* controller's datasheet and supporting DPDK documentation for guidance
* on how these parameters should be set.
*/
#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
#define RX_WTHRESH 4 /**< Default values of RX write-back threshold reg. */
/*
* These default values are optimized for use with the Intel(R) 82599 10 GbE
* Controller and the DPDK ixgbe PMD. Consider using other values for other
* network controllers and/or network drivers.
*/
#define TX_PTHRESH 36 /**< Default values of TX prefetch threshold reg. */
#define TX_HTHRESH 0 /**< Default values of TX host threshold reg. */
#define TX_WTHRESH 0 /**< Default values of TX write-back threshold reg. */
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
/* mask of enabled ports */
static uint32_t l2fwd_ivshmem_enabled_port_mask = 0;
static struct ether_addr l2fwd_ivshmem_ports_eth_addr[RTE_MAX_ETHPORTS];
#define NB_MBUF 8192
#define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
struct lcore_queue_conf {
unsigned n_rx_port;
unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
struct vm_port_param * port_param[MAX_RX_QUEUE_PER_LCORE];
struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
struct mbuf_table rx_mbufs[RTE_MAX_ETHPORTS];
} __rte_cache_aligned;
static struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
static const struct rte_eth_conf port_conf = {
.rxmode = {
.split_hdr_size = 0,
.header_split = 0, /**< Header Split disabled */
.hw_ip_checksum = 0, /**< IP checksum offload disabled */
.hw_vlan_filter = 0, /**< VLAN filtering disabled */
.jumbo_frame = 0, /**< Jumbo Frame Support disabled */
.hw_strip_crc = 0, /**< CRC stripped by hardware */
},
.txmode = {
.mq_mode = ETH_MQ_TX_NONE,
},
};
static const struct rte_eth_rxconf rx_conf = {
.rx_thresh = {
.pthresh = RX_PTHRESH,
.hthresh = RX_HTHRESH,
.wthresh = RX_WTHRESH,
},
};
static const struct rte_eth_txconf tx_conf = {
.tx_thresh = {
.pthresh = TX_PTHRESH,
.hthresh = TX_HTHRESH,
.wthresh = TX_WTHRESH,
},
.tx_free_thresh = 0, /* Use PMD default values */
.tx_rs_thresh = 0, /* Use PMD default values */
};
#define METADATA_NAME "l2fwd_ivshmem"
#define CMDLINE_OPT_FWD_CONF "fwd-conf"
#define QEMU_CMD_FMT "/tmp/ivshmem_qemu_cmdline_%s"
struct port_statistics port_statistics[RTE_MAX_ETHPORTS];
struct rte_mempool * l2fwd_ivshmem_pktmbuf_pool = NULL;
/* Print out statistics on packets dropped */
static void
print_stats(void)
{
uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
uint64_t total_vm_packets_dropped, total_vm_packets_tx, total_vm_packets_rx;
unsigned portid;
total_packets_dropped = 0;
total_packets_tx = 0;
total_packets_rx = 0;
total_vm_packets_tx = 0;
total_vm_packets_rx = 0;
const char clr[] = { 27, '[', '2', 'J', '\0' };
const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
/* Clear screen and move to top left */
printf("%s%s", clr, topLeft);
printf("\nPort statistics ====================================");
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
/* skip disabled ports */
if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0)
continue;
printf("\nStatistics for port %u ------------------------------"
"\nPackets sent: %24"PRIu64
"\nPackets received: %20"PRIu64
"\nPackets dropped: %21"PRIu64,
portid,
port_statistics[portid].tx,
port_statistics[portid].rx,
port_statistics[portid].dropped);
total_packets_dropped += port_statistics[portid].dropped;
total_packets_tx += port_statistics[portid].tx;
total_packets_rx += port_statistics[portid].rx;
}
printf("\nVM statistics ======================================");
for (portid = 0; portid < ctrl->nb_ports; portid++) {
printf("\nStatistics for port %u ------------------------------"
"\nPackets sent: %24"PRIu64
"\nPackets received: %20"PRIu64,
portid,
ctrl->vm_ports[portid].stats.tx,
ctrl->vm_ports[portid].stats.rx);
total_vm_packets_dropped += ctrl->vm_ports[portid].stats.dropped;
total_vm_packets_tx += ctrl->vm_ports[portid].stats.tx;
total_vm_packets_rx += ctrl->vm_ports[portid].stats.rx;
}
printf("\nAggregate statistics ==============================="
"\nTotal packets sent: %18"PRIu64
"\nTotal packets received: %14"PRIu64
"\nTotal packets dropped: %15"PRIu64
"\nTotal VM packets sent: %15"PRIu64
"\nTotal VM packets received: %11"PRIu64,
total_packets_tx,
total_packets_rx,
total_packets_dropped,
total_vm_packets_tx,
total_vm_packets_rx);
printf("\n====================================================\n");
}
static int
print_to_file(const char *cmdline, const char *config_name)
{
FILE *file;
char path[PATH_MAX];
rte_snprintf(path, sizeof(path), QEMU_CMD_FMT, config_name);
file = fopen(path, "w");
if (file == NULL) {
RTE_LOG(ERR, L2FWD_IVSHMEM, "Could not open '%s' \n", path);
return -1;
}
RTE_LOG(DEBUG, L2FWD_IVSHMEM, "QEMU command line for config '%s': %s \n",
config_name, cmdline);
fprintf(file, "%s\n", cmdline);
fclose(file);
return 0;
}
static int
generate_ivshmem_cmdline(const char *config_name)
{
char cmdline[PATH_MAX];
if (rte_ivshmem_metadata_cmdline_generate(cmdline, sizeof(cmdline),
config_name) < 0)
return -1;
if (print_to_file(cmdline, config_name) < 0)
return -1;
rte_ivshmem_metadata_dump(config_name);
return 0;
}
/* display usage */
static void
l2fwd_ivshmem_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK [-q NQ -T PERIOD]\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
" -T PERIOD: statistics will be refreshed each PERIOD seconds "
"(0 to disable, 10 default, 86400 maximum)\n",
prgname);
}
static unsigned int
l2fwd_ivshmem_parse_nqueue(const char *q_arg)
{
char *end = NULL;
unsigned long n;
/* parse hexadecimal string */
n = strtoul(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return 0;
if (n == 0)
return 0;
if (n >= MAX_RX_QUEUE_PER_LCORE)
return 0;
return n;
}
static int
l2fwd_ivshmem_parse_portmask(const char *portmask)
{
char *end = NULL;
unsigned long pm;
/* parse hexadecimal string */
pm = strtoul(portmask, &end, 16);
if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (pm == 0)
return -1;
return pm;
}
static int
l2fwd_ivshmem_parse_timer_period(const char *q_arg)
{
char *end = NULL;
int n;
/* parse number string */
n = strtol(q_arg, &end, 10);
if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
return -1;
if (n >= MAX_TIMER_PERIOD)
return -1;
return n;
}
/* Parse the argument given in the command line of the application */
static int
l2fwd_ivshmem_parse_args(int argc, char **argv)
{
int opt, ret;
char **argvopt;
int option_index;
char *prgname = argv[0];
static struct option lgopts[] = {
{CMDLINE_OPT_FWD_CONF, 1, 0, 0},
{NULL, 0, 0, 0}
};
argvopt = argv;
while ((opt = getopt_long(argc, argvopt, "q:p:T:",
lgopts, &option_index)) != EOF) {
switch (opt) {
/* portmask */
case 'p':
l2fwd_ivshmem_enabled_port_mask = l2fwd_ivshmem_parse_portmask(optarg);
if (l2fwd_ivshmem_enabled_port_mask == 0) {
printf("invalid portmask\n");
l2fwd_ivshmem_usage(prgname);
return -1;
}
break;
/* nqueue */
case 'q':
l2fwd_ivshmem_rx_queue_per_lcore = l2fwd_ivshmem_parse_nqueue(optarg);
if (l2fwd_ivshmem_rx_queue_per_lcore == 0) {
printf("invalid queue number\n");
l2fwd_ivshmem_usage(prgname);
return -1;
}
break;
/* timer period */
case 'T':
timer_period = l2fwd_ivshmem_parse_timer_period(optarg) * 1000 * TIMER_MILLISECOND;
if (timer_period < 0) {
printf("invalid timer period\n");
l2fwd_ivshmem_usage(prgname);
return -1;
}
break;
/* long options */
case 0:
l2fwd_ivshmem_usage(prgname);
return -1;
default:
l2fwd_ivshmem_usage(prgname);
return -1;
}
}
if (optind >= 0)
argv[optind-1] = prgname;
ret = optind-1;
optind = 0; /* reset getopt lib */
return ret;
}
/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
uint8_t portid, count, all_ports_up, print_flag = 0;
struct rte_eth_link link;
printf("\nChecking link status");
fflush(stdout);
for (count = 0; count <= MAX_CHECK_TIME; count++) {
all_ports_up = 1;
for (portid = 0; portid < port_num; portid++) {
if ((port_mask & (1 << portid)) == 0)
continue;
memset(&link, 0, sizeof(link));
rte_eth_link_get_nowait(portid, &link);
/* print link status if flag set */
if (print_flag == 1) {
if (link.link_status)
printf("Port %d Link Up - speed %u "
"Mbps - %s\n", (uint8_t)portid,
(unsigned)link.link_speed,
(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
("full-duplex") : ("half-duplex\n"));
else
printf("Port %d Link Down\n",
(uint8_t)portid);
continue;
}
/* clear all_ports_up flag if any link down */
if (link.link_status == 0) {
all_ports_up = 0;
break;
}
}
/* after finally printing all link status, get out */
if (print_flag == 1)
break;
if (all_ports_up == 0) {
printf(".");
fflush(stdout);
rte_delay_ms(CHECK_INTERVAL);
}
/* set the print_flag if all ports up or timeout */
if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
print_flag = 1;
printf("done\n");
}
}
}
/* Send the burst of packets on an output interface */
static int
l2fwd_ivshmem_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
{
struct rte_mbuf **m_table;
unsigned ret;
unsigned queueid =0;
m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
port_statistics[port].tx += ret;
if (unlikely(ret < n)) {
port_statistics[port].dropped += (n - ret);
do {
rte_pktmbuf_free(m_table[ret]);
} while (++ret < n);
}
return 0;
}
/* Enqueue packets for TX and prepare them to be sent on the network */
static int
l2fwd_ivshmem_send_packet(struct rte_mbuf *m, uint8_t port)
{
unsigned lcore_id, len;
struct lcore_queue_conf *qconf;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
len = qconf->tx_mbufs[port].len;
qconf->tx_mbufs[port].m_table[len] = m;
len++;
/* enough pkts to be sent */
if (unlikely(len == MAX_PKT_BURST)) {
l2fwd_ivshmem_send_burst(qconf, MAX_PKT_BURST, port);
len = 0;
}
qconf->tx_mbufs[port].len = len;
return 0;
}
static int
l2fwd_ivshmem_receive_burst(struct lcore_queue_conf *qconf, unsigned portid,
unsigned vm_port)
{
struct rte_mbuf ** m;
struct rte_ring * rx;
unsigned len, pkt_idx;
m = qconf->rx_mbufs[portid].m_table;
len = qconf->rx_mbufs[portid].len;
rx = qconf->port_param[vm_port]->rx_ring;
/* if enqueueing failed, ring is probably full, so drop the packets */
if (rte_ring_enqueue_bulk(rx, (void**) m, len) < 0) {
port_statistics[portid].dropped += len;
pkt_idx = 0;
do {
rte_pktmbuf_free(m[pkt_idx]);
} while (++pkt_idx < len);
}
else
/* increment rx stats by however many packets we managed to receive */
port_statistics[portid].rx += len;
return 0;
}
/* Enqueue packets for RX and prepare them to be sent to VM */
static int
l2fwd_ivshmem_receive_packets(struct rte_mbuf ** m, unsigned n, unsigned portid,
unsigned vm_port)
{
unsigned lcore_id, len, pkt_idx;
struct lcore_queue_conf *qconf;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
len = qconf->rx_mbufs[portid].len;
pkt_idx = 0;
/* enqueue packets */
while (pkt_idx < n && len < MAX_PKT_BURST * 2) {
qconf->rx_mbufs[portid].m_table[len++] = m[pkt_idx++];
}
/* increment queue len by however many packets we managed to receive */
qconf->rx_mbufs[portid].len += pkt_idx;
/* drop the unreceived packets */
if (unlikely(pkt_idx < n)) {
port_statistics[portid].dropped += n - pkt_idx;
do {
rte_pktmbuf_free(m[pkt_idx]);
} while (++pkt_idx < n);
}
/* drain the queue halfway through the maximum capacity */
if (unlikely(qconf->rx_mbufs[portid].len >= MAX_PKT_BURST))
l2fwd_ivshmem_receive_burst(qconf, portid, vm_port);
return 0;
}
/* loop for host forwarding mode.
* the data flow is as follows:
* 1) get packets from TX queue and send it out from a given port
* 2) RX packets from given port and enqueue them on RX ring
* 3) dequeue packets from TX ring and put them on TX queue for a given port
*/
static void
fwd_loop(void)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST * 2];
struct rte_mbuf *m;
unsigned lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
unsigned i, j, portid, nb_rx;
struct lcore_queue_conf *qconf;
struct rte_ring *tx;
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
timer_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
if (qconf->n_rx_port == 0) {
RTE_LOG(INFO, L2FWD_IVSHMEM, "lcore %u has nothing to do\n", lcore_id);
return;
}
RTE_LOG(INFO, L2FWD_IVSHMEM, "entering main loop on lcore %u\n", lcore_id);
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
RTE_LOG(INFO, L2FWD_IVSHMEM, " -- lcoreid=%u portid=%u\n", lcore_id,
portid);
}
while (ctrl->state == STATE_FWD) {
cur_tsc = rte_rdtsc();
/*
* Burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
/*
* TX
*/
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
if (qconf->tx_mbufs[portid].len == 0)
continue;
l2fwd_ivshmem_send_burst(qconf,
qconf->tx_mbufs[portid].len,
(uint8_t) portid);
qconf->tx_mbufs[portid].len = 0;
}
/*
* RX
*/
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
if (qconf->rx_mbufs[portid].len == 0)
continue;
l2fwd_ivshmem_receive_burst(qconf, portid, i);
qconf->rx_mbufs[portid].len = 0;
}
/* if timer is enabled */
if (timer_period > 0) {
/* advance the timer */
timer_tsc += diff_tsc;
/* if timer has reached its timeout */
if (unlikely(timer_tsc >= (uint64_t) timer_period)) {
/* do this only on master core */
if (lcore_id == rte_get_master_lcore()) {
print_stats();
/* reset the timer */
timer_tsc = 0;
}
}
}
prev_tsc = cur_tsc;
}
/*
* packet RX and forwarding
*/
for (i = 0; i < qconf->n_rx_port; i++) {
/* RX packets from port and put them on RX ring */
portid = qconf->rx_port_list[i];
nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
pkts_burst, MAX_PKT_BURST);
if (nb_rx != 0)
l2fwd_ivshmem_receive_packets(pkts_burst, nb_rx, portid, i);
/* dequeue packets from TX ring and send them to TX queue */
tx = qconf->port_param[i]->tx_ring;
nb_rx = rte_ring_count(tx);
nb_rx = RTE_MIN(nb_rx, (unsigned) MAX_PKT_BURST);
if (nb_rx == 0)
continue;
/* should not happen */
if (unlikely(rte_ring_dequeue_bulk(tx, (void**) pkts_burst, nb_rx) < 0)) {
ctrl->state = STATE_FAIL;
return;
}
for (j = 0; j < nb_rx; j++) {
m = pkts_burst[j];
l2fwd_ivshmem_send_packet(m, portid);
}
}
}
}
static int
l2fwd_ivshmem_launch_one_lcore(__attribute__((unused)) void *dummy)
{
fwd_loop();
return 0;
}
int main(int argc, char **argv)
{
char name[RTE_RING_NAMESIZE];
struct rte_ring *r;
struct lcore_queue_conf *qconf;
struct rte_eth_dev_info dev_info;
uint8_t portid, port_nr;
uint8_t nb_ports, nb_ports_available;
uint8_t nb_ports_in_mask;
int ret;
unsigned lcore_id, rx_lcore_id;
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
argc -= ret;
argv += ret;
/* parse application arguments (after the EAL ones) */
ret = l2fwd_ivshmem_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid l2fwd-ivshmem arguments\n");
/* create a shared mbuf pool */
l2fwd_ivshmem_pktmbuf_pool =
rte_mempool_create(MBUF_MP_NAME, NB_MBUF,
MBUF_SIZE, 32,
sizeof(struct rte_pktmbuf_pool_private),
rte_pktmbuf_pool_init, NULL,
rte_pktmbuf_init, NULL,
rte_socket_id(), 0);
if (l2fwd_ivshmem_pktmbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
/* init driver(s) */
if (rte_pmd_init_all() < 0)
rte_exit(EXIT_FAILURE, "Cannot init pmd\n");
if (rte_eal_pci_probe() < 0)
rte_exit(EXIT_FAILURE, "Cannot probe PCI\n");
nb_ports = rte_eth_dev_count();
if (nb_ports == 0)
rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
if (nb_ports > RTE_MAX_ETHPORTS)
nb_ports = RTE_MAX_ETHPORTS;
/*
* reserve memzone to communicate with VMs - we cannot use rte_malloc here
* because while it is technically possible, it is a very bad idea to share
* the heap between two primary processes.
*/
ctrl_mz = rte_memzone_reserve(CTRL_MZ_NAME, sizeof(struct ivshmem_ctrl),
SOCKET_ID_ANY, 0);
if (ctrl_mz == NULL)
rte_exit(EXIT_FAILURE, "Cannot reserve control memzone\n");
ctrl = (struct ivshmem_ctrl*) ctrl_mz->addr;
memset(ctrl, 0, sizeof(struct ivshmem_ctrl));
/*
* Each port is assigned an output port.
*/
nb_ports_in_mask = 0;
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0)
continue;
if (portid % 2) {
ctrl->vm_ports[nb_ports_in_mask].dst = &ctrl->vm_ports[nb_ports_in_mask-1];
ctrl->vm_ports[nb_ports_in_mask-1].dst = &ctrl->vm_ports[nb_ports_in_mask];
}
nb_ports_in_mask++;
rte_eth_dev_info_get(portid, &dev_info);
}
if (nb_ports_in_mask % 2) {
printf("Notice: odd number of ports in portmask.\n");
ctrl->vm_ports[nb_ports_in_mask-1].dst =
&ctrl->vm_ports[nb_ports_in_mask-1];
}
rx_lcore_id = 0;
qconf = NULL;
printf("Initializing ports configuration...\n");
nb_ports_available = nb_ports;
/* Initialise each port */
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0) {
printf("Skipping disabled port %u\n", (unsigned) portid);
nb_ports_available--;
continue;
}
/* init port */
printf("Initializing port %u... ", (unsigned) portid);
fflush(stdout);
ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
ret, (unsigned) portid);
rte_eth_macaddr_get(portid,&l2fwd_ivshmem_ports_eth_addr[portid]);
/* init one RX queue */
fflush(stdout);
ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
rte_eth_dev_socket_id(portid), &rx_conf,
l2fwd_ivshmem_pktmbuf_pool);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
ret, (unsigned) portid);
/* init one TX queue on each port */
fflush(stdout);
ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
rte_eth_dev_socket_id(portid), &tx_conf);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
ret, (unsigned) portid);
/* Start device */
ret = rte_eth_dev_start(portid);
if (ret < 0)
rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
ret, (unsigned) portid);
printf("done: \n");
rte_eth_promiscuous_enable(portid);
printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
(unsigned) portid,
l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[0],
l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[1],
l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[2],
l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[3],
l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[4],
l2fwd_ivshmem_ports_eth_addr[portid].addr_bytes[5]);
/* initialize port stats */
memset(&port_statistics, 0, sizeof(port_statistics));
}
if (!nb_ports_available) {
rte_exit(EXIT_FAILURE,
"All available ports are disabled. Please set portmask.\n");
}
port_nr = 0;
/* Initialize the port/queue configuration of each logical core */
for (portid = 0; portid < nb_ports; portid++) {
if ((l2fwd_ivshmem_enabled_port_mask & (1 << portid)) == 0)
continue;
/* get the lcore_id for this port */
while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
lcore_queue_conf[rx_lcore_id].n_rx_port ==
l2fwd_ivshmem_rx_queue_per_lcore) {
rx_lcore_id++;
if (rx_lcore_id >= RTE_MAX_LCORE)
rte_exit(EXIT_FAILURE, "Not enough cores\n");
}
if (qconf != &lcore_queue_conf[rx_lcore_id])
/* Assigned a new logical core in the loop above. */
qconf = &lcore_queue_conf[rx_lcore_id];
rte_eth_macaddr_get(portid, &ctrl->vm_ports[port_nr].ethaddr);
qconf->rx_port_list[qconf->n_rx_port] = portid;
qconf->port_param[qconf->n_rx_port] = &ctrl->vm_ports[port_nr];
qconf->n_rx_port++;
port_nr++;
printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
}
check_all_ports_link_status(nb_ports_available, l2fwd_ivshmem_enabled_port_mask);
/* create rings for each VM port (several ports can be on the same VM).
* note that we store the pointers in ctrl - that way, they are the same
* and valid across all VMs because ctrl is also in DPDK memory */
for (portid = 0; portid < nb_ports_available; portid++) {
/* RX ring. SP/SC because it's only used by host and a single VM */
rte_snprintf(name, sizeof(name), "%s%i", RX_RING_PREFIX, portid);
r = rte_ring_create(name, NB_MBUF,
SOCKET_ID_ANY, RING_F_SP_ENQ | RING_F_SC_DEQ);
if (r == NULL)
rte_exit(EXIT_FAILURE, "Cannot create ring %s\n", name);
ctrl->vm_ports[portid].rx_ring = r;
/* TX ring. SP/SC because it's only used by host and a single VM */
rte_snprintf(name, sizeof(name), "%s%i", TX_RING_PREFIX, portid);
r = rte_ring_create(name, NB_MBUF,
SOCKET_ID_ANY, RING_F_SP_ENQ | RING_F_SC_DEQ);
if (r == NULL)
rte_exit(EXIT_FAILURE, "Cannot create ring %s\n", name);
ctrl->vm_ports[portid].tx_ring = r;
}
/* create metadata, output cmdline */
if (rte_ivshmem_metadata_create(METADATA_NAME) < 0)
rte_exit(EXIT_FAILURE, "Cannot create IVSHMEM metadata\n");
if (rte_ivshmem_metadata_add_memzone(ctrl_mz, METADATA_NAME))
rte_exit(EXIT_FAILURE, "Cannot add memzone to IVSHMEM metadata\n");
if (rte_ivshmem_metadata_add_mempool(l2fwd_ivshmem_pktmbuf_pool, METADATA_NAME))
rte_exit(EXIT_FAILURE, "Cannot add mbuf mempool to IVSHMEM metadata\n");
for (portid = 0; portid < nb_ports_available; portid++) {
if (rte_ivshmem_metadata_add_ring(ctrl->vm_ports[portid].rx_ring,
METADATA_NAME) < 0)
rte_exit(EXIT_FAILURE, "Cannot add ring %s to IVSHMEM metadata\n",
ctrl->vm_ports[portid].rx_ring->name);
if (rte_ivshmem_metadata_add_ring(ctrl->vm_ports[portid].tx_ring,
METADATA_NAME) < 0)
rte_exit(EXIT_FAILURE, "Cannot add ring %s to IVSHMEM metadata\n",
ctrl->vm_ports[portid].tx_ring->name);
}
generate_ivshmem_cmdline(METADATA_NAME);
ctrl->nb_ports = nb_ports_available;
printf("Waiting for VM to initialize...\n");
/* wait for VM to initialize */
while (ctrl->state != STATE_FWD) {
if (ctrl->state == STATE_FAIL)
rte_exit(EXIT_FAILURE, "VM reported failure\n");
sleep(1);
}
printf("Done!\n");
sigsetup();
/* launch per-lcore init on every lcore */
rte_eal_mp_remote_launch(l2fwd_ivshmem_launch_one_lcore, NULL, CALL_MASTER);
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
if (ctrl->state == STATE_FAIL)
rte_exit(EXIT_FAILURE, "VM reported failure\n");
return 0;
}

111
examples/l2fwd-ivshmem/include/common.h Normal file
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/*-
* 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.
*/
#ifndef _IVSHMEM_COMMON_H_
#define _IVSHMEM_COMMON_H_
#define RTE_LOGTYPE_L2FWD_IVSHMEM RTE_LOGTYPE_USER1
#define CTRL_MZ_NAME "CTRL_MEMZONE"
#define MBUF_MP_NAME "MBUF_MEMPOOL"
#define RX_RING_PREFIX "RX_"
#define TX_RING_PREFIX "TX_"
/* A tsc-based timer responsible for triggering statistics printout */
#define TIMER_MILLISECOND 2000000ULL /* around 1ms at 2 Ghz */
#define MAX_TIMER_PERIOD 86400 /* 1 day max */
static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* default period is 10 seconds */
#define DIM(x)\
(sizeof(x)/sizeof(x)[0])
#define MAX_PKT_BURST 32
const struct rte_memzone * ctrl_mz;
enum l2fwd_state {
STATE_NONE = 0,
STATE_FWD,
STATE_EXIT,
STATE_FAIL
};
/* Per-port statistics struct */
struct port_statistics {
uint64_t tx;
uint64_t rx;
uint64_t dropped;
} __rte_cache_aligned;
struct mbuf_table {
unsigned len;
struct rte_mbuf *m_table[MAX_PKT_BURST * 2]; /**< allow up to two bursts */
};
struct vm_port_param {
struct rte_ring * rx_ring; /**< receiving ring for current port */
struct rte_ring * tx_ring; /**< transmitting ring for current port */
struct vm_port_param * dst; /**< current port's destination port */
volatile struct port_statistics stats; /**< statistics for current port */
struct ether_addr ethaddr; /**< Ethernet address of the port */
};
/* control structure, to synchronize host and VM */
struct ivshmem_ctrl {
rte_spinlock_t lock;
uint8_t nb_ports; /**< total nr of ports */
volatile enum l2fwd_state state; /**< report state */
struct vm_port_param vm_ports[RTE_MAX_ETHPORTS];
};
struct ivshmem_ctrl * ctrl;
static unsigned int l2fwd_ivshmem_rx_queue_per_lcore = 1;
static void sighandler(int __rte_unused s)
{
ctrl->state = STATE_EXIT;
}
static void sigsetup(void)
{
struct sigaction sigIntHandler;
sigIntHandler.sa_handler = sighandler;
sigemptyset(&sigIntHandler.sa_mask);
sigIntHandler.sa_flags = 0;
sigaction(SIGINT, &sigIntHandler, NULL);
}
#endif /* _IVSHMEM_COMMON_H_ */