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examples/l2fwd-keepalive: add sample application

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Modified version of l2fwd to demonstrate keep-alive functionality.

Signed-off-by: Remy Horton <remy.horton@intel.com>
Signed-off-by: Maryam Tahhan <maryam.tahhan@intel.com>
Signed-off-by: John J Browne <john.j.browne@intel.com>
This commit is contained in:
Remy Horton 2015-11-18 14:05:16 +00:00 committed by Thomas Monjalon
parent 75583b0d1e
commit e64833f227
7 changed files with 1052 additions and 1 deletions
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2
MAINTAINERS
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@ -112,6 +112,8 @@ Keep alive
M: Remy Horton <remy.horton@intel.com>
F: lib/librte_eal/common/include/rte_keepalive.h
F: lib/librte_eal/common/rte_keepalive.c
F: examples/l2fwd-keepalive/
F: doc/guides/sample_app_ug/keep_alive.rst
Secondary process
K: RTE_PROC_

2
doc/guides/rel_notes/release_2_2.rst
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@ -15,7 +15,7 @@ New Features
New function rte_ring_free() allows the user to free a ring
if it was created with rte_ring_create().
* **Added keepalive support to EAL.**
* **Added keepalive support to EAL and example application.**
* **Added ethdev API to support IEEE1588.**

1
doc/guides/sample_app_ug/index.rst
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@ -49,6 +49,7 @@ Sample Applications User Guide
ipv4_multicast
ip_reassembly
kernel_nic_interface
keep_alive
l2_forward_job_stats
l2_forward_real_virtual
l3_forward

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doc/guides/sample_app_ug/keep_alive.rst Normal file
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@ -0,0 +1,191 @@
.. BSD LICENSE
Copyright(c) 2015 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.
Keep Alive Sample Application
=============================
The Keep Alive application is a simple example of a
heartbeat/watchdog for packet processing cores. It demonstrates how
to detect 'failed' DPDK cores and notify a fault management entity
of this failure. Its purpose is to ensure the failure of the core
does not result in a fault that is not detectable by a management
entity.
Overview
--------
The application demonstrates how to protect against 'silent outages'
on packet processing cores. A Keep Alive Monitor Agent Core (master)
monitors the state of packet processing cores (worker cores) by
dispatching pings at a regular time interval (default is 5ms) and
monitoring the state of the cores. Cores states are: Alive, MIA, Dead
or Buried. MIA indicates a missed ping, and Dead indicates two missed
pings within the specified time interval. When a core is Dead, a
callback function is invoked to restart the packet processing core;
A real life application might use this callback function to notify a
higher level fault management entity of the core failure in order to
take the appropriate corrective action.
Note: Only the worker cores are monitored. A local (on the host) mechanism
or agent to supervise the Keep Alive Monitor Agent Core DPDK core is required
to detect its failure.
Note: This application is based on the L2 forwarding application. As
such, the initialization and run-time paths are very similar to those
of the L2 forwarding application.
Compiling the Application
-------------------------
To compile the application:
#. Go to the sample application directory:
.. code-block:: console
export RTE_SDK=/path/to/rte_sdk cd ${RTE_SDK}/examples/keep_alive
#. Set the target (a default target is used if not specified). For example:
.. code-block:: console
export RTE_TARGET=x86_64-native-linuxapp-gcc
See the *DPDK Getting Started Guide* for possible RTE_TARGET values.
#. Build the application:
.. code-block:: console
make
Running the Application
-----------------------
The application has a number of command line options:
.. code-block:: console
./build/l2fwd-keepalive [EAL options] \
-- -p PORTMASK [-q NQ] [-K PERIOD] [-T PERIOD]
where,
* ``p PORTMASK``: A hexadecimal bitmask of the ports to configure
* ``q NQ``: A number of queues (=ports) per lcore (default is 1)
* ``K PERIOD``: Heartbeat check period in ms(5ms default; 86400 max)
* ``T PERIOD``: statistics will be refreshed each PERIOD seconds (0 to
disable, 10 default, 86400 maximum).
To run the application in linuxapp environment with 4 lcores, 16 ports
8 RX queues per lcore and a ping interval of 10ms, issue the command:
.. code-block:: console
./build/l2fwd-keepalive -c f -n 4 -- -q 8 -p ffff -K 10
Refer to the *DPDK Getting Started Guide* for general information on
running applications and the Environment Abstraction Layer (EAL)
options.
Explanation
-----------
The following sections provide some explanation of the The
Keep-Alive/'Liveliness' conceptual scheme. As mentioned in the
overview section, the initialization and run-time paths are very
similar to those of the L2 forwarding application (see Chapter 9
"L2 Forwarding Sample Application (in Real and Virtualized
Environments)" for more information).
The Keep-Alive/'Liveliness' conceptual scheme:
* A Keep- Alive Agent Runs every N Milliseconds.
* DPDK Cores respond to the keep-alive agent.
* If keep-alive agent detects time-outs, it notifies the
fault management entity through a callback function.
The following sections provide some explanation of the code aspects
that are specific to the Keep Alive sample application.
The heartbeat functionality is initialized with a struct
rte_heartbeat and the callback function to invoke in the
case of a timeout.
.. code-block:: c
rte_global_keepalive_info = rte_keepalive_create(&dead_core, NULL);
if (rte_global_hbeat_info == NULL)
rte_exit(EXIT_FAILURE, "keepalive_create() failed");
The function that issues the pings hbeat_dispatch_pings()
is configured to run every check_period milliseconds.
.. code-block:: c
if (rte_timer_reset(&hb_timer,
(check_period * rte_get_timer_hz()) / 1000,
PERIODICAL,
rte_lcore_id(),
&hbeat_dispatch_pings, rte_global_keepalive_info
) != 0 )
rte_exit(EXIT_FAILURE, "Keepalive setup failure.\n");
The rest of the initialization and run-time path follows
the same paths as the the L2 forwarding application. The only
addition to the main processing loop is the mark alive
functionality and the example random failures.
.. code-block:: c
rte_keepalive_mark_alive(&rte_global_hbeat_info);
cur_tsc = rte_rdtsc();
/* Die randomly within 7 secs for demo purposes.. */
if (cur_tsc - tsc_initial > tsc_lifetime)
break;
The rte_keepalive_mark_alive function simply sets the core state to alive.
.. code-block:: c
static inline void
rte_keepalive_mark_alive(struct rte_heartbeat *keepcfg)
{
keepcfg->state_flags[rte_lcore_id()] = 1;
}

1
examples/Makefile
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@ -53,6 +53,7 @@ DIRS-$(CONFIG_RTE_LIBRTE_KNI) += kni
DIRS-y += l2fwd
DIRS-$(CONFIG_RTE_LIBRTE_IVSHMEM) += l2fwd-ivshmem
DIRS-$(CONFIG_RTE_LIBRTE_JOBSTATS) += l2fwd-jobstats
DIRS-y += l2fwd-keepalive
DIRS-y += l3fwd
DIRS-$(CONFIG_RTE_LIBRTE_ACL) += l3fwd-acl
DIRS-$(CONFIG_RTE_LIBRTE_POWER) += l3fwd-power

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examples/l2fwd-keepalive/Makefile Normal file
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@ -0,0 +1,50 @@
# 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 overridden by command line or environment
RTE_TARGET ?= x86_64-native-linuxapp-gcc
include $(RTE_SDK)/mk/rte.vars.mk
# binary name
APP = l2fwd-keepalive
# all source are stored in SRCS-y
SRCS-y := main.c
CFLAGS += -O3
CFLAGS += $(WERROR_FLAGS)
include $(RTE_SDK)/mk/rte.extapp.mk

806
examples/l2fwd-keepalive/main.c Normal file
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@ -0,0 +1,806 @@
/*-
* BSD LICENSE
*
* Copyright(c) 2010-2015 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 <inttypes.h>
#include <sys/types.h>
#include <sys/queue.h>
#include <netinet/in.h>
#include <setjmp.h>
#include <stdarg.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <rte_common.h>
#include <rte_log.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_memzone.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_timer.h>
#include <rte_keepalive.h>
#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
#define NB_MBUF 8192
#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
/*
* 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;
/* ethernet addresses of ports */
static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
/* mask of enabled ports */
static uint32_t l2fwd_enabled_port_mask;
/* list of enabled ports */
static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
static unsigned int l2fwd_rx_queue_per_lcore = 1;
struct mbuf_table {
unsigned len;
struct rte_mbuf *m_table[MAX_PKT_BURST];
};
#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 tx_mbufs[RTE_MAX_ETHPORTS];
} __rte_cache_aligned;
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,
},
};
struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
/* Per-port statistics struct */
struct l2fwd_port_statistics {
uint64_t tx;
uint64_t rx;
uint64_t dropped;
} __rte_cache_aligned;
struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
/* A tsc-based timer responsible for triggering statistics printout */
#define TIMER_MILLISECOND 1
#define MAX_TIMER_PERIOD 86400 /* 1 day max */
static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* 10 seconds */
static int64_t check_period = 5; /* default check cycle is 5ms */
/* Keepalive structure */
struct rte_keepalive *rte_global_keepalive_info;
/* Print out statistics on packets dropped */
static void
print_stats(__attribute__((unused)) struct rte_timer *ptr_timer,
__attribute__((unused)) void *ptr_data)
{
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 < RTE_MAX_ETHPORTS; portid++) {
/* skip disabled ports */
if ((l2fwd_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("\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");
}
/* Send the burst of packets on an output interface */
static int
l2fwd_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 */
static int
l2fwd_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_send_burst(qconf, MAX_PKT_BURST, port);
len = 0;
}
qconf->tx_mbufs[port].len = len;
return 0;
}
static void
l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
{
struct ether_hdr *eth;
void *tmp;
unsigned dst_port;
dst_port = l2fwd_dst_ports[portid];
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)dst_port << 40);
/* src addr */
ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
l2fwd_send_packet(m, (uint8_t) dst_port);
}
/* main processing loop */
static void
l2fwd_main_loop(void)
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_mbuf *m;
unsigned lcore_id;
uint64_t prev_tsc, diff_tsc, cur_tsc;
unsigned i, j, portid, nb_rx;
struct lcore_queue_conf *qconf;
const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1)
/ US_PER_S * BURST_TX_DRAIN_US;
prev_tsc = 0;
lcore_id = rte_lcore_id();
qconf = &lcore_queue_conf[lcore_id];
if (qconf->n_rx_port == 0) {
RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
return;
}
RTE_LOG(INFO, L2FWD, "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, " -- lcoreid=%u portid=%u\n", lcore_id,
portid);
}
uint64_t tsc_initial = rte_rdtsc();
uint64_t tsc_lifetime = (rand()&0x07) * rte_get_tsc_hz();
while (1) {
/* Keepalive heartbeat */
rte_keepalive_mark_alive(rte_global_keepalive_info);
cur_tsc = rte_rdtsc();
/*
* Die randomly within 7 secs for demo purposes if
* keepalive enabled
*/
if (check_period > 0 && cur_tsc - tsc_initial > tsc_lifetime)
break;
/*
* TX burst queue drain
*/
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
if (qconf->tx_mbufs[portid].len == 0)
continue;
l2fwd_send_burst(&lcore_queue_conf[lcore_id],
qconf->tx_mbufs[portid].len,
(uint8_t) portid);
qconf->tx_mbufs[portid].len = 0;
}
prev_tsc = cur_tsc;
}
/*
* Read packet from RX queues
*/
for (i = 0; i < qconf->n_rx_port; i++) {
portid = qconf->rx_port_list[i];
nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
pkts_burst, MAX_PKT_BURST);
port_statistics[portid].rx += nb_rx;
for (j = 0; j < nb_rx; j++) {
m = pkts_burst[j];
rte_prefetch0(rte_pktmbuf_mtod(m, void *));
l2fwd_simple_forward(m, portid);
}
}
}
}
static int
l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
{
l2fwd_main_loop();
return 0;
}
/* display usage */
static void
l2fwd_usage(const char *prgname)
{
printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
" -p PORTMASK: hexadecimal bitmask of ports to configure\n"
" -q NQ: number of queue (=ports) per lcore (default is 1)\n"
" -K PERIOD: Keepalive check period (5 default; 86400 max)\n"
" -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
prgname);
}
static int
l2fwd_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 unsigned int
l2fwd_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_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;
}
static int
l2fwd_parse_check_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_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, "p:q:T:K:",
lgopts, &option_index)) != EOF) {
switch (opt) {
/* portmask */
case 'p':
l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
if (l2fwd_enabled_port_mask == 0) {
printf("invalid portmask\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* nqueue */
case 'q':
l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
if (l2fwd_rx_queue_per_lcore == 0) {
printf("invalid queue number\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* timer period */
case 'T':
timer_period = l2fwd_parse_timer_period(optarg)
* 1000 * TIMER_MILLISECOND;
if (timer_period < 0) {
printf("invalid timer period\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* Check period */
case 'K':
check_period = l2fwd_parse_check_period(optarg);
if (check_period < 0) {
printf("invalid check period\n");
l2fwd_usage(prgname);
return -1;
}
break;
/* long options */
case 0:
l2fwd_usage(prgname);
return -1;
default:
l2fwd_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");
}
}
}
static void
dead_core(__attribute__((unused)) void *ptr_data, const int id_core)
{
printf("Dead core %i - restarting..\n", id_core);
if (rte_eal_get_lcore_state(id_core) == FINISHED) {
rte_eal_wait_lcore(id_core);
rte_eal_remote_launch(l2fwd_launch_one_lcore, NULL, id_core);
} else {
printf("..false positive!\n");
}
}
int
main(int argc, char **argv)
{
struct lcore_queue_conf *qconf;
struct rte_eth_dev_info dev_info;
int ret;
uint8_t nb_ports;
uint8_t nb_ports_available;
uint8_t portid, last_port;
unsigned lcore_id, rx_lcore_id;
unsigned nb_ports_in_mask = 0;
/* init EAL */
ret = rte_eal_init(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
argc -= ret;
argv += ret;
l2fwd_enabled_port_mask = 0;
/* parse application arguments (after the EAL ones) */
ret = l2fwd_parse_args(argc, argv);
if (ret < 0)
rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
/* create the mbuf pool */
l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
if (l2fwd_pktmbuf_pool == NULL)
rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\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;
/* reset l2fwd_dst_ports */
for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
l2fwd_dst_ports[portid] = 0;
last_port = 0;
/*
* Each logical core is assigned a dedicated TX queue on each port.
*/
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
continue;
if (nb_ports_in_mask % 2) {
l2fwd_dst_ports[portid] = last_port;
l2fwd_dst_ports[last_port] = portid;
} else
last_port = portid;
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");
l2fwd_dst_ports[last_port] = last_port;
}
rx_lcore_id = 1;
qconf = NULL;
/* Initialize the port/queue configuration of each logical core */
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_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_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->n_rx_port++;
printf("Lcore %u: RX port %u\n",
rx_lcore_id, (unsigned) portid);
}
nb_ports_available = nb_ports;
/* Initialise each port */
for (portid = 0; portid < nb_ports; portid++) {
/* skip ports that are not enabled */
if ((l2fwd_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_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),
NULL,
l2fwd_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),
NULL);
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);
rte_eth_promiscuous_enable(portid);
printf("Port %u, MAC address: "
"%02X:%02X:%02X:%02X:%02X:%02X\n\n",
(unsigned) portid,
l2fwd_ports_eth_addr[portid].addr_bytes[0],
l2fwd_ports_eth_addr[portid].addr_bytes[1],
l2fwd_ports_eth_addr[portid].addr_bytes[2],
l2fwd_ports_eth_addr[portid].addr_bytes[3],
l2fwd_ports_eth_addr[portid].addr_bytes[4],
l2fwd_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");
}
check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
struct rte_timer hb_timer, stats_timer;
rte_timer_subsystem_init();
rte_timer_init(&stats_timer);
if (check_period > 0) {
rte_global_keepalive_info =
rte_keepalive_create(&dead_core, NULL);
if (rte_global_keepalive_info == NULL)
rte_exit(EXIT_FAILURE, "init_keep_alive() failed");
rte_timer_init(&hb_timer);
if (rte_timer_reset(&hb_timer,
(check_period * rte_get_timer_hz()) / 1000,
PERIODICAL,
rte_lcore_id(),
(void(*)(struct rte_timer*, void*))
&rte_keepalive_dispatch_pings,
rte_global_keepalive_info
) != 0 )
rte_exit(EXIT_FAILURE, "Keepalive setup failure.\n");
}
if (timer_period > 0) {
if (rte_timer_reset(&stats_timer,
(timer_period * rte_get_timer_hz()) / 1000,
PERIODICAL,
rte_lcore_id(),
&print_stats, NULL
) != 0 )
rte_exit(EXIT_FAILURE, "Stats setup failure.\n");
}
/* launch per-lcore init on every slave lcore */
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
if (qconf->n_rx_port == 0)
RTE_LOG(INFO, L2FWD,
"lcore %u has nothing to do\n",
lcore_id
);
else {
rte_eal_remote_launch(
l2fwd_launch_one_lcore,
NULL,
lcore_id
);
rte_keepalive_register_core(rte_global_keepalive_info,
lcore_id);
}
}
for (;;) {
rte_timer_manage();
rte_delay_ms(5);
}
RTE_LCORE_FOREACH_SLAVE(lcore_id) {
if (rte_eal_wait_lcore(lcore_id) < 0)
return -1;
}
return 0;
}