mirror of
https://github.com/openvswitch/ovs
synced 2025-08-22 09:58:01 +00:00
fd016ae3fb
Poll-loop is the core to implement main loop. It should be available in libopenvswitch. Signed-off-by: Xiao Liang <shaw.leon@gmail.com> Signed-off-by: Ben Pfaff <blp@ovn.org>
412 lines
12 KiB
C
412 lines
12 KiB
C
/*
|
|
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2015, 2017 Nicira, Inc.
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at:
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <errno.h>
|
|
#include <getopt.h>
|
|
#include <limits.h>
|
|
#include <signal.h>
|
|
#include <stdlib.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
#include "command-line.h"
|
|
#include "compiler.h"
|
|
#include "daemon.h"
|
|
#include "fatal-signal.h"
|
|
#include "learning-switch.h"
|
|
#include "ofp-version-opt.h"
|
|
#include "openvswitch/ofpbuf.h"
|
|
#include "openflow/openflow.h"
|
|
#include "openvswitch/poll-loop.h"
|
|
#include "openvswitch/rconn.h"
|
|
#include "simap.h"
|
|
#include "stream-ssl.h"
|
|
#include "timeval.h"
|
|
#include "unixctl.h"
|
|
#include "util.h"
|
|
#include "openvswitch/ofp-parse.h"
|
|
#include "openvswitch/vconn.h"
|
|
#include "openvswitch/vlog.h"
|
|
#include "socket-util.h"
|
|
#include "openvswitch/ofp-util.h"
|
|
|
|
VLOG_DEFINE_THIS_MODULE(controller);
|
|
|
|
#define MAX_SWITCHES 16
|
|
#define MAX_LISTENERS 16
|
|
|
|
struct switch_ {
|
|
struct lswitch *lswitch;
|
|
};
|
|
|
|
/* -H, --hub: Learn the ports on which MAC addresses appear? */
|
|
static bool learn_macs = true;
|
|
|
|
/* -n, --noflow: Set up flows? (If not, every packet is processed at the
|
|
* controller.) */
|
|
static bool set_up_flows = true;
|
|
|
|
/* -N, --normal: Use "NORMAL" action instead of explicit port? */
|
|
static bool action_normal = false;
|
|
|
|
/* -w, --wildcard: 0 to disable wildcard flow entries, an OFPFW10_* bitmask to
|
|
* enable specific wildcards, or UINT32_MAX to use the default wildcards. */
|
|
static uint32_t wildcards = 0;
|
|
|
|
/* --max-idle: Maximum idle time, in seconds, before flows expire. */
|
|
static int max_idle = 60;
|
|
|
|
/* --mute: If true, accept connections from switches but do not reply to any
|
|
* of their messages (for debugging fail-open mode). */
|
|
static bool mute = false;
|
|
|
|
/* -q, --queue: default OpenFlow queue, none if UINT32_MAX. */
|
|
static uint32_t default_queue = UINT32_MAX;
|
|
|
|
/* -Q, --port-queue: map from port name to port number. */
|
|
static struct simap port_queues = SIMAP_INITIALIZER(&port_queues);
|
|
|
|
/* --with-flows: Flows to send to switch. */
|
|
static struct ofputil_flow_mod *default_flows;
|
|
static size_t n_default_flows;
|
|
static enum ofputil_protocol usable_protocols;
|
|
|
|
/* --unixctl: Name of unixctl socket, or null to use the default. */
|
|
static char *unixctl_path = NULL;
|
|
|
|
static void new_switch(struct switch_ *, struct vconn *);
|
|
static void parse_options(int argc, char *argv[]);
|
|
OVS_NO_RETURN static void usage(void);
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
struct unixctl_server *unixctl;
|
|
struct switch_ switches[MAX_SWITCHES];
|
|
struct pvconn *listeners[MAX_LISTENERS];
|
|
int n_switches, n_listeners;
|
|
int retval;
|
|
int i;
|
|
|
|
ovs_cmdl_proctitle_init(argc, argv);
|
|
set_program_name(argv[0]);
|
|
service_start(&argc, &argv);
|
|
parse_options(argc, argv);
|
|
fatal_ignore_sigpipe();
|
|
|
|
daemon_become_new_user(false);
|
|
|
|
if (argc - optind < 1) {
|
|
ovs_fatal(0, "at least one vconn argument required; "
|
|
"use --help for usage");
|
|
}
|
|
|
|
n_switches = n_listeners = 0;
|
|
for (i = optind; i < argc; i++) {
|
|
const char *name = argv[i];
|
|
struct vconn *vconn;
|
|
|
|
retval = vconn_open(name, get_allowed_ofp_versions(), DSCP_DEFAULT,
|
|
&vconn);
|
|
if (!retval) {
|
|
if (n_switches >= MAX_SWITCHES) {
|
|
ovs_fatal(0, "max %d switch connections", n_switches);
|
|
}
|
|
new_switch(&switches[n_switches++], vconn);
|
|
continue;
|
|
} else if (retval == EAFNOSUPPORT) {
|
|
struct pvconn *pvconn;
|
|
retval = pvconn_open(name, get_allowed_ofp_versions(),
|
|
DSCP_DEFAULT, &pvconn);
|
|
if (!retval) {
|
|
if (n_listeners >= MAX_LISTENERS) {
|
|
ovs_fatal(0, "max %d passive connections", n_listeners);
|
|
}
|
|
listeners[n_listeners++] = pvconn;
|
|
}
|
|
}
|
|
if (retval) {
|
|
VLOG_ERR("%s: connect: %s", name, ovs_strerror(retval));
|
|
}
|
|
}
|
|
if (n_switches == 0 && n_listeners == 0) {
|
|
ovs_fatal(0, "no active or passive switch connections");
|
|
}
|
|
|
|
daemonize_start(false);
|
|
|
|
retval = unixctl_server_create(unixctl_path, &unixctl);
|
|
if (retval) {
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
daemonize_complete();
|
|
|
|
while (n_switches > 0 || n_listeners > 0) {
|
|
/* Accept connections on listening vconns. */
|
|
for (i = 0; i < n_listeners && n_switches < MAX_SWITCHES; ) {
|
|
struct vconn *new_vconn;
|
|
|
|
retval = pvconn_accept(listeners[i], &new_vconn);
|
|
if (!retval || retval == EAGAIN) {
|
|
if (!retval) {
|
|
new_switch(&switches[n_switches++], new_vconn);
|
|
}
|
|
i++;
|
|
} else {
|
|
pvconn_close(listeners[i]);
|
|
listeners[i] = listeners[--n_listeners];
|
|
}
|
|
}
|
|
|
|
/* Do some switching work. . */
|
|
for (i = 0; i < n_switches; ) {
|
|
struct switch_ *this = &switches[i];
|
|
lswitch_run(this->lswitch);
|
|
if (lswitch_is_alive(this->lswitch)) {
|
|
i++;
|
|
} else {
|
|
lswitch_destroy(this->lswitch);
|
|
switches[i] = switches[--n_switches];
|
|
}
|
|
}
|
|
|
|
unixctl_server_run(unixctl);
|
|
|
|
/* Wait for something to happen. */
|
|
if (n_switches < MAX_SWITCHES) {
|
|
for (i = 0; i < n_listeners; i++) {
|
|
pvconn_wait(listeners[i]);
|
|
}
|
|
}
|
|
for (i = 0; i < n_switches; i++) {
|
|
struct switch_ *sw = &switches[i];
|
|
lswitch_wait(sw->lswitch);
|
|
}
|
|
unixctl_server_wait(unixctl);
|
|
poll_block();
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
new_switch(struct switch_ *sw, struct vconn *vconn)
|
|
{
|
|
struct lswitch_config cfg;
|
|
struct rconn *rconn;
|
|
|
|
rconn = rconn_create(60, 0, DSCP_DEFAULT, get_allowed_ofp_versions());
|
|
rconn_connect_unreliably(rconn, vconn, NULL);
|
|
|
|
cfg.mode = (action_normal ? LSW_NORMAL
|
|
: learn_macs ? LSW_LEARN
|
|
: LSW_FLOOD);
|
|
cfg.wildcards = wildcards;
|
|
cfg.max_idle = set_up_flows ? max_idle : -1;
|
|
cfg.default_flows = default_flows;
|
|
cfg.n_default_flows = n_default_flows;
|
|
cfg.usable_protocols = usable_protocols;
|
|
cfg.default_queue = default_queue;
|
|
cfg.port_queues = &port_queues;
|
|
cfg.mute = mute;
|
|
sw->lswitch = lswitch_create(rconn, &cfg);
|
|
}
|
|
|
|
static void
|
|
add_port_queue(char *s)
|
|
{
|
|
char *save_ptr = NULL;
|
|
char *port_name;
|
|
char *queue_id;
|
|
|
|
port_name = strtok_r(s, ":", &save_ptr);
|
|
queue_id = strtok_r(NULL, "", &save_ptr);
|
|
if (!queue_id) {
|
|
ovs_fatal(0, "argument to -Q or --port-queue should take the form "
|
|
"\"<port-name>:<queue-id>\"");
|
|
}
|
|
|
|
if (!simap_put(&port_queues, port_name, atoi(queue_id))) {
|
|
ovs_fatal(0, "<port-name> arguments for -Q or --port-queue must "
|
|
"be unique");
|
|
}
|
|
}
|
|
|
|
static void
|
|
parse_options(int argc, char *argv[])
|
|
{
|
|
enum {
|
|
OPT_MAX_IDLE = UCHAR_MAX + 1,
|
|
OPT_PEER_CA_CERT,
|
|
OPT_MUTE,
|
|
OPT_WITH_FLOWS,
|
|
OPT_UNIXCTL,
|
|
VLOG_OPTION_ENUMS,
|
|
DAEMON_OPTION_ENUMS,
|
|
OFP_VERSION_OPTION_ENUMS,
|
|
SSL_OPTION_ENUMS,
|
|
};
|
|
static const struct option long_options[] = {
|
|
{"hub", no_argument, NULL, 'H'},
|
|
{"noflow", no_argument, NULL, 'n'},
|
|
{"normal", no_argument, NULL, 'N'},
|
|
{"wildcards", optional_argument, NULL, 'w'},
|
|
{"max-idle", required_argument, NULL, OPT_MAX_IDLE},
|
|
{"mute", no_argument, NULL, OPT_MUTE},
|
|
{"queue", required_argument, NULL, 'q'},
|
|
{"port-queue", required_argument, NULL, 'Q'},
|
|
{"with-flows", required_argument, NULL, OPT_WITH_FLOWS},
|
|
{"unixctl", required_argument, NULL, OPT_UNIXCTL},
|
|
{"help", no_argument, NULL, 'h'},
|
|
DAEMON_LONG_OPTIONS,
|
|
OFP_VERSION_LONG_OPTIONS,
|
|
VLOG_LONG_OPTIONS,
|
|
STREAM_SSL_LONG_OPTIONS,
|
|
{"peer-ca-cert", required_argument, NULL, OPT_PEER_CA_CERT},
|
|
{NULL, 0, NULL, 0},
|
|
};
|
|
char *short_options = ovs_cmdl_long_options_to_short_options(long_options);
|
|
|
|
for (;;) {
|
|
int indexptr;
|
|
char *error;
|
|
int c;
|
|
|
|
c = getopt_long(argc, argv, short_options, long_options, &indexptr);
|
|
if (c == -1) {
|
|
break;
|
|
}
|
|
|
|
switch (c) {
|
|
case 'H':
|
|
learn_macs = false;
|
|
break;
|
|
|
|
case 'n':
|
|
set_up_flows = false;
|
|
break;
|
|
|
|
case OPT_MUTE:
|
|
mute = true;
|
|
break;
|
|
|
|
case 'N':
|
|
action_normal = true;
|
|
break;
|
|
|
|
case 'w':
|
|
wildcards = optarg ? strtol(optarg, NULL, 16) : UINT32_MAX;
|
|
break;
|
|
|
|
case OPT_MAX_IDLE:
|
|
if (!strcmp(optarg, "permanent")) {
|
|
max_idle = OFP_FLOW_PERMANENT;
|
|
} else {
|
|
max_idle = atoi(optarg);
|
|
if (max_idle < 1 || max_idle > 65535) {
|
|
ovs_fatal(0, "--max-idle argument must be between 1 and "
|
|
"65535 or the word 'permanent'");
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 'q':
|
|
default_queue = atoi(optarg);
|
|
break;
|
|
|
|
case 'Q':
|
|
add_port_queue(optarg);
|
|
break;
|
|
|
|
case OPT_WITH_FLOWS:
|
|
error = parse_ofp_flow_mod_file(optarg, NULL, OFPFC_ADD,
|
|
&default_flows, &n_default_flows,
|
|
&usable_protocols);
|
|
if (error) {
|
|
ovs_fatal(0, "%s", error);
|
|
}
|
|
break;
|
|
|
|
case OPT_UNIXCTL:
|
|
unixctl_path = optarg;
|
|
break;
|
|
|
|
case 'h':
|
|
usage();
|
|
|
|
VLOG_OPTION_HANDLERS
|
|
OFP_VERSION_OPTION_HANDLERS
|
|
DAEMON_OPTION_HANDLERS
|
|
|
|
STREAM_SSL_OPTION_HANDLERS
|
|
|
|
case OPT_PEER_CA_CERT:
|
|
stream_ssl_set_peer_ca_cert_file(optarg);
|
|
break;
|
|
|
|
case '?':
|
|
exit(EXIT_FAILURE);
|
|
|
|
default:
|
|
abort();
|
|
}
|
|
}
|
|
free(short_options);
|
|
|
|
if (!simap_is_empty(&port_queues) || default_queue != UINT32_MAX) {
|
|
if (action_normal) {
|
|
ovs_error(0, "queue IDs are incompatible with -N or --normal; "
|
|
"not using OFPP_NORMAL");
|
|
action_normal = false;
|
|
}
|
|
|
|
if (!learn_macs) {
|
|
ovs_error(0, "queue IDs are incompatible with -H or --hub; "
|
|
"not acting as hub");
|
|
learn_macs = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
usage(void)
|
|
{
|
|
printf("%s: OpenFlow controller\n"
|
|
"usage: %s [OPTIONS] METHOD\n"
|
|
"where METHOD is any OpenFlow connection method.\n",
|
|
program_name, program_name);
|
|
vconn_usage(true, true, false);
|
|
daemon_usage();
|
|
ofp_version_usage();
|
|
vlog_usage();
|
|
printf("\nOther options:\n"
|
|
" -H, --hub act as hub instead of learning switch\n"
|
|
" -n, --noflow pass traffic, but don't add flows\n"
|
|
" --max-idle=SECS max idle time for new flows\n"
|
|
" -N, --normal use OFPP_NORMAL action\n"
|
|
" -w, --wildcards[=MASK] wildcard (specified) bits in flows\n"
|
|
" -q, --queue=QUEUE-ID OpenFlow queue ID to use for output\n"
|
|
" -Q PORT-NAME:QUEUE-ID use QUEUE-ID for frames from PORT-NAME\n"
|
|
" --with-flows FILE use the flows from FILE\n"
|
|
" --unixctl=SOCKET override default control socket name\n"
|
|
" -h, --help display this help message\n"
|
|
" -V, --version display version information\n");
|
|
exit(EXIT_SUCCESS);
|
|
}
|