*/
#include <config.h>
+#include "secchan.h"
#include <assert.h>
#include <errno.h>
#include <getopt.h>
-#include <inttypes.h>
#include <netinet/in.h>
-#include <poll.h>
-#include <regex.h>
#include <stdlib.h>
#include <signal.h>
#include <string.h>
-#include <time.h>
-#include <unistd.h>
#include "command-line.h"
#include "compiler.h"
#include "daemon.h"
-#include "dhcp-client.h"
-#include "dhcp.h"
-#include "dynamic-string.h"
+#include "dirs.h"
+#include "discovery.h"
+#include "executer.h"
+#include "fail-open.h"
#include "fault.h"
-#include "flow.h"
-#include "learning-switch.h"
+#include "in-band.h"
#include "list.h"
-#include "mac-learning.h"
-#include "netdev.h"
-#include "nicira-ext.h"
#include "ofpbuf.h"
-#include "openflow.h"
+#include "openflow/openflow.h"
#include "packets.h"
+#include "port-watcher.h"
#include "poll-loop.h"
+#include "ratelimit.h"
#include "rconn.h"
-#include "stp.h"
+#ifdef SUPPORT_SNAT
+#include "snat.h"
+#endif
+#include "stp-secchan.h"
+#include "status.h"
#include "timeval.h"
#include "util.h"
#include "vconn-ssl.h"
#include "vlog.h"
#define THIS_MODULE VLM_secchan
-/* Behavior when the connection to the controller fails. */
-enum fail_mode {
- FAIL_OPEN, /* Act as learning switch. */
- FAIL_CLOSED /* Drop all packets. */
-};
-
-/* Maximum number of management connection listeners. */
-#define MAX_MGMT 8
-
-/* Settings that may be configured by the user. */
-struct settings {
- /* Overall mode of operation. */
- bool discovery; /* Discover the controller automatically? */
- bool in_band; /* Connect to controller in-band? */
-
- /* Related vconns and network devices. */
- const char *nl_name; /* Local datapath (must be "nl:" vconn). */
- char *of_name; /* ofX network device name. */
- const char *controller_name; /* Controller (if not discovery mode). */
- const char *listener_names[MAX_MGMT]; /* Listen for mgmt connections. */
- size_t n_listeners; /* Number of mgmt connection listeners. */
- const char *monitor_name; /* Listen for traffic monitor connections. */
-
- /* Failure behavior. */
- enum fail_mode fail_mode; /* Act as learning switch if no controller? */
- int max_idle; /* Idle time for flows in fail-open mode. */
- int probe_interval; /* # seconds idle before sending echo request. */
- int max_backoff; /* Max # seconds between connection attempts. */
-
- /* Packet-in rate-limiting. */
- int rate_limit; /* Tokens added to bucket per second. */
- int burst_limit; /* Maximum number token bucket size. */
-
- /* Discovery behavior. */
- regex_t accept_controller_regex; /* Controller vconns to accept. */
- const char *accept_controller_re; /* String version of regex. */
- bool update_resolv_conf; /* Update /etc/resolv.conf? */
-};
-
-struct half {
- struct rconn *rconn;
- struct ofpbuf *rxbuf;
- int n_txq; /* No. of packets queued for tx on 'rconn'. */
-};
-
-struct relay {
- struct list node;
-
-#define HALF_LOCAL 0
-#define HALF_REMOTE 1
- struct half halves[2];
-
- bool is_mgmt_conn;
-};
-
struct hook {
- bool (*packet_cb[2])(struct relay *, void *aux);
- void (*periodic_cb)(void *aux);
- void (*wait_cb)(void *aux);
+ const struct hook_class *class;
void *aux;
};
-static struct vlog_rate_limit vrl = VLOG_RATE_LIMIT_INIT(60, 60);
+struct secchan {
+ struct hook *hooks;
+ size_t n_hooks, allocated_hooks;
+};
+
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(60, 60);
static void parse_options(int argc, char *argv[], struct settings *);
static void usage(void) NO_RETURN;
+static char *vconn_name_without_subscription(const char *);
static struct pvconn *open_passive_vconn(const char *name);
static struct vconn *accept_vconn(struct pvconn *pvconn);
-static struct relay *relay_create(struct rconn *local, struct rconn *remote,
- bool is_mgmt_conn);
+static struct relay *relay_create(struct rconn *async,
+ struct rconn *local, struct rconn *remote);
static struct relay *relay_accept(const struct settings *, struct pvconn *);
-static void relay_run(struct relay *, const struct hook[], size_t n_hooks);
+static void relay_run(struct relay *, struct secchan *);
static void relay_wait(struct relay *);
static void relay_destroy(struct relay *);
-static struct hook make_hook(bool (*local_packet_cb)(struct relay *, void *),
- bool (*remote_packet_cb)(struct relay *, void *),
- void (*periodic_cb)(void *),
- void (*wait_cb)(void *),
- void *aux);
-static struct ofp_packet_in *get_ofp_packet_in(struct relay *);
-static bool get_ofp_packet_eth_header(struct relay *, struct ofp_packet_in **,
- struct eth_header **);
-static void get_ofp_packet_payload(struct ofp_packet_in *, struct ofpbuf *);
-
-struct switch_status;
-struct status_reply;
-static struct hook switch_status_hook_create(const struct settings *,
- struct switch_status **);
-static void switch_status_register_category(struct switch_status *,
- const char *category,
- void (*cb)(struct status_reply *,
- void *aux),
- void *aux);
-static void status_reply_put(struct status_reply *, const char *, ...)
- PRINTF_FORMAT(2, 3);
-
-static void rconn_status_cb(struct status_reply *, void *rconn_);
-
-static struct discovery *discovery_init(const struct settings *,
- struct switch_status *);
-static void discovery_question_connectivity(struct discovery *);
-static bool discovery_run(struct discovery *, char **controller_name);
-static void discovery_wait(struct discovery *);
-
-static struct hook in_band_hook_create(const struct settings *,
- struct switch_status *,
- struct rconn *remote);
-
-struct port_watcher;
-static struct hook port_watcher_create(struct rconn *local,
- struct rconn *remote,
- struct port_watcher **);
-static uint32_t port_watcher_get_flags(const struct port_watcher *,
- int port_no);
-static void port_watcher_set_flags(struct port_watcher *,
- int port_no, uint32_t flags, uint32_t mask);
-
-static struct hook stp_hook_create(const struct settings *,
- struct port_watcher *,
- struct rconn *local, struct rconn *remote);
-
-static struct hook fail_open_hook_create(const struct settings *,
- struct switch_status *,
- struct rconn *local,
- struct rconn *remote);
-static struct hook rate_limit_hook_create(const struct settings *,
- struct switch_status *,
- struct rconn *local,
- struct rconn *remote);
-
-
-static void modify_dhcp_request(struct dhcp_msg *, void *aux);
-static bool validate_dhcp_offer(const struct dhcp_msg *, void *aux);
-
int
main(int argc, char *argv[])
{
struct list relays = LIST_INITIALIZER(&relays);
- struct hook hooks[8];
- size_t n_hooks = 0;
+ struct secchan secchan;
struct pvconn *monitor;
struct pvconn *listeners[MAX_MGMT];
size_t n_listeners;
- struct rconn *local_rconn, *remote_rconn;
+ char *local_rconn_name;
+ struct rconn *async_rconn, *local_rconn, *remote_rconn;
struct relay *controller_relay;
struct discovery *discovery;
struct switch_status *switch_status;
parse_options(argc, argv, &s);
signal(SIGPIPE, SIG_IGN);
+ secchan.hooks = NULL;
+ secchan.n_hooks = 0;
+ secchan.allocated_hooks = 0;
+
/* Start listening for management and monitoring connections. */
n_listeners = 0;
for (i = 0; i < s.n_listeners; i++) {
monitor = s.monitor_name ? open_passive_vconn(s.monitor_name) : NULL;
/* Initialize switch status hook. */
- hooks[n_hooks++] = switch_status_hook_create(&s, &switch_status);
+ switch_status_start(&secchan, &s, &switch_status);
- /* Start controller discovery. */
- discovery = s.discovery ? discovery_init(&s, switch_status) : NULL;
+ die_if_already_running();
+ daemonize();
/* Start listening for vlogconf requests. */
retval = vlog_server_listen(NULL, NULL);
ofp_fatal(retval, "Could not listen for vlog connections");
}
- die_if_already_running();
- daemonize();
-
- VLOG_WARN("OpenFlow reference implementation version %s", VERSION);
+ VLOG_WARN("OpenFlow reference implementation version %s", VERSION BUILDNR);
VLOG_WARN("OpenFlow protocol version 0x%02x", OFP_VERSION);
- /* Connect to datapath. */
+ /* Check datapath name, to try to catch command-line invocation errors. */
+ if (strncmp(s.dp_name, "nl:", 3) && strncmp(s.dp_name, "unix:", 5)
+ && !s.controller_name) {
+ VLOG_WARN("Controller not specified and datapath is not nl: or "
+ "unix:. (Did you forget to specify the datapath?)");
+ }
+
+ /* Connect to datapath with a subscription for asynchronous events. */
+ async_rconn = rconn_create(0, s.max_backoff);
+ rconn_connect(async_rconn, s.dp_name);
+ switch_status_register_category(switch_status, "async",
+ rconn_status_cb, async_rconn);
+
+ /* Connect to datapath without a subscription, for requests and replies. */
+ local_rconn_name = vconn_name_without_subscription(s.dp_name);
local_rconn = rconn_create(0, s.max_backoff);
- rconn_connect(local_rconn, s.nl_name);
+ rconn_connect(local_rconn, local_rconn_name);
+ free(local_rconn_name);
switch_status_register_category(switch_status, "local",
rconn_status_cb, local_rconn);
rconn_status_cb, remote_rconn);
/* Start relaying. */
- controller_relay = relay_create(local_rconn, remote_rconn, false);
+ controller_relay = relay_create(async_rconn, local_rconn, remote_rconn);
list_push_back(&relays, &controller_relay->node);
/* Set up hooks. */
- hooks[n_hooks++] = port_watcher_create(local_rconn, remote_rconn, &pw);
- hooks[n_hooks++] = stp_hook_create(&s, pw, local_rconn, remote_rconn);
+ port_watcher_start(&secchan, local_rconn, remote_rconn, &pw);
+ discovery = s.discovery ? discovery_init(&s, pw, switch_status) : NULL;
+#ifdef SUPPORT_SNAT
+ snat_start(&secchan, pw);
+#endif
+ if (s.enable_stp) {
+ stp_start(&secchan, &s, pw, local_rconn, remote_rconn);
+ }
if (s.in_band) {
- hooks[n_hooks++] = in_band_hook_create(&s, switch_status,
- remote_rconn);
+ in_band_start(&secchan, &s, switch_status, pw, remote_rconn);
}
if (s.fail_mode == FAIL_OPEN) {
- hooks[n_hooks++] = fail_open_hook_create(&s, switch_status,
- local_rconn, remote_rconn);
+ fail_open_start(&secchan, &s, switch_status,
+ local_rconn, remote_rconn);
}
if (s.rate_limit) {
- hooks[n_hooks++] = rate_limit_hook_create(&s, switch_status,
- local_rconn, remote_rconn);
+ rate_limit_start(&secchan, &s, switch_status, remote_rconn);
+ }
+ if (s.command_acl[0]) {
+ executer_start(&secchan, &s);
}
- assert(n_hooks <= ARRAY_SIZE(hooks));
for (;;) {
struct relay *r, *n;
/* Do work. */
LIST_FOR_EACH_SAFE (r, n, struct relay, node, &relays) {
- relay_run(r, hooks, n_hooks);
+ relay_run(r, &secchan);
}
for (i = 0; i < n_listeners; i++) {
for (;;) {
if (monitor) {
struct vconn *new = accept_vconn(monitor);
if (new) {
+ /* XXX should monitor async_rconn too but rconn_add_monitor()
+ * takes ownership of the vconn passed in. */
rconn_add_monitor(local_rconn, new);
}
}
- for (i = 0; i < n_hooks; i++) {
- if (hooks[i].periodic_cb) {
- hooks[i].periodic_cb(hooks[i].aux);
+ for (i = 0; i < secchan.n_hooks; i++) {
+ if (secchan.hooks[i].class->periodic_cb) {
+ secchan.hooks[i].class->periodic_cb(secchan.hooks[i].aux);
}
}
if (s.discovery) {
if (monitor) {
pvconn_wait(monitor);
}
- for (i = 0; i < n_hooks; i++) {
- if (hooks[i].wait_cb) {
- hooks[i].wait_cb(hooks[i].aux);
+ for (i = 0; i < secchan.n_hooks; i++) {
+ if (secchan.hooks[i].class->wait_cb) {
+ secchan.hooks[i].class->wait_cb(secchan.hooks[i].aux);
}
}
if (discovery) {
retval = pvconn_accept(pvconn, OFP_VERSION, &new);
if (retval && retval != EAGAIN) {
- VLOG_WARN_RL(&vrl, "accept failed (%s)", strerror(retval));
+ VLOG_WARN_RL(&rl, "accept failed (%s)", strerror(retval));
}
return new;
}
-static struct hook
-make_hook(bool (*local_packet_cb)(struct relay *, void *aux),
- bool (*remote_packet_cb)(struct relay *, void *aux),
- void (*periodic_cb)(void *aux),
- void (*wait_cb)(void *aux),
- void *aux)
+void
+add_hook(struct secchan *secchan, const struct hook_class *class, void *aux)
{
- struct hook h;
- h.packet_cb[HALF_LOCAL] = local_packet_cb;
- h.packet_cb[HALF_REMOTE] = remote_packet_cb;
- h.periodic_cb = periodic_cb;
- h.wait_cb = wait_cb;
- h.aux = aux;
- return h;
+ struct hook *hook;
+
+ if (secchan->n_hooks >= secchan->allocated_hooks) {
+ secchan->allocated_hooks = secchan->allocated_hooks * 2 + 1;
+ secchan->hooks = xrealloc(secchan->hooks,
+ (sizeof *secchan->hooks
+ * secchan->allocated_hooks));
+ }
+ hook = &secchan->hooks[secchan->n_hooks++];
+ hook->class = class;
+ hook->aux = aux;
}
-static struct ofp_packet_in *
+struct ofp_packet_in *
get_ofp_packet_in(struct relay *r)
{
struct ofpbuf *msg = r->halves[HALF_LOCAL].rxbuf;
return NULL;
}
-static bool
+bool
get_ofp_packet_eth_header(struct relay *r, struct ofp_packet_in **opip,
struct eth_header **ethp)
{
}
return false;
}
-
\f
/* OpenFlow message relaying. */
+/* Returns a malloc'd string containing a copy of 'vconn_name' modified not to
+ * subscribe to asynchronous messages such as 'ofp_packet_in' events (if
+ * possible). */
+static char *
+vconn_name_without_subscription(const char *vconn_name)
+{
+ int nl_index;
+ if (sscanf(vconn_name, "nl:%d", &nl_index) == 1) {
+ /* nl:123 or nl:123:1 opens a netlink connection to local datapath 123.
+ * nl:123:0 opens a netlink connection to local datapath 123 without
+ * obtaining a subscription for ofp_packet_in or ofp_flow_expired
+ * messages. */
+ return xasprintf("nl:%d:0", nl_index);
+ } else {
+ /* We don't have a way to specify not to subscribe to those messages
+ * for other transports. (That's a defect: really this should be in
+ * the OpenFlow protocol, not the Netlink transport). */
+ VLOG_WARN_RL(&rl, "new management connection will receive "
+ "asynchronous messages");
+ return xstrdup(vconn_name);
+ }
+}
+
static struct relay *
relay_accept(const struct settings *s, struct pvconn *pvconn)
{
struct vconn *new_remote, *new_local;
- char *nl_name_without_subscription;
struct rconn *r1, *r2;
+ char *vconn_name;
int retval;
new_remote = accept_vconn(pvconn);
return NULL;
}
- /* nl:123 or nl:123:1 opens a netlink connection to local datapath 123. We
- * only accept the former syntax in main().
- *
- * nl:123:0 opens a netlink connection to local datapath 123 without
- * obtaining a subscription for ofp_packet_in or ofp_flow_expired
- * messages.*/
- nl_name_without_subscription = xasprintf("%s:0", s->nl_name);
- retval = vconn_open(nl_name_without_subscription, OFP_VERSION, &new_local);
+ vconn_name = vconn_name_without_subscription(s->dp_name);
+ retval = vconn_open(vconn_name, OFP_VERSION, &new_local);
if (retval) {
- VLOG_ERR_RL(&vrl, "could not connect to %s (%s)",
- nl_name_without_subscription, strerror(retval));
+ VLOG_ERR_RL(&rl, "could not connect to %s (%s)",
+ vconn_name, strerror(retval));
vconn_close(new_remote);
- free(nl_name_without_subscription);
+ free(vconn_name);
return NULL;
}
/* Create and return relay. */
r1 = rconn_create(0, 0);
- rconn_connect_unreliably(r1, nl_name_without_subscription, new_local);
- free(nl_name_without_subscription);
+ rconn_connect_unreliably(r1, vconn_name, new_local);
+ free(vconn_name);
r2 = rconn_create(0, 0);
rconn_connect_unreliably(r2, "passive", new_remote);
- return relay_create(r1, r2, true);
+ return relay_create(NULL, r1, r2);
}
static struct relay *
-relay_create(struct rconn *local, struct rconn *remote, bool is_mgmt_conn)
+relay_create(struct rconn *async, struct rconn *local, struct rconn *remote)
{
struct relay *r = xcalloc(1, sizeof *r);
r->halves[HALF_LOCAL].rconn = local;
r->halves[HALF_REMOTE].rconn = remote;
- r->is_mgmt_conn = is_mgmt_conn;
+ r->is_mgmt_conn = async == NULL;
+ r->async_rconn = async;
return r;
}
+static bool
+call_local_packet_cbs(struct secchan *secchan, struct relay *r)
+{
+ const struct hook *h;
+ for (h = secchan->hooks; h < &secchan->hooks[secchan->n_hooks]; h++) {
+ bool (*cb)(struct relay *, void *aux) = h->class->local_packet_cb;
+ if (cb && (cb)(r, h->aux)) {
+ return true;
+ }
+ }
+ return false;
+}
+
+static bool
+call_remote_packet_cbs(struct secchan *secchan, struct relay *r)
+{
+ const struct hook *h;
+ for (h = secchan->hooks; h < &secchan->hooks[secchan->n_hooks]; h++) {
+ bool (*cb)(struct relay *, void *aux) = h->class->remote_packet_cb;
+ if (cb && (cb)(r, h->aux)) {
+ return true;
+ }
+ }
+ return false;
+}
+
static void
-relay_run(struct relay *r, const struct hook hooks[], size_t n_hooks)
+relay_run(struct relay *r, struct secchan *secchan)
{
int iteration;
int i;
+ if (r->async_rconn) {
+ rconn_run(r->async_rconn);
+ }
for (i = 0; i < 2; i++) {
rconn_run(r->halves[i].rconn);
}
if (!this->rxbuf) {
this->rxbuf = rconn_recv(this->rconn);
+ if (!this->rxbuf && i == HALF_LOCAL && r->async_rconn) {
+ this->rxbuf = rconn_recv(r->async_rconn);
+ }
if (this->rxbuf && (i == HALF_REMOTE || !r->is_mgmt_conn)) {
- const struct hook *h;
- for (h = hooks; h < &hooks[n_hooks]; h++) {
- if (h->packet_cb[i] && h->packet_cb[i](r, h->aux)) {
- ofpbuf_delete(this->rxbuf);
- this->rxbuf = NULL;
- progress = true;
- break;
- }
+ if (i == HALF_LOCAL
+ ? call_local_packet_cbs(secchan, r)
+ : call_remote_packet_cbs(secchan, r))
+ {
+ ofpbuf_delete(this->rxbuf);
+ this->rxbuf = NULL;
+ progress = true;
+ break;
}
}
}
{
int i;
+ if (r->async_rconn) {
+ rconn_run_wait(r->async_rconn);
+ }
for (i = 0; i < 2; i++) {
struct half *this = &r->halves[i];
rconn_run_wait(this->rconn);
if (!this->rxbuf) {
rconn_recv_wait(this->rconn);
+ if (i == HALF_LOCAL && r->async_rconn) {
+ rconn_recv_wait(r->async_rconn);
+ }
}
}
}
int i;
list_remove(&r->node);
+ rconn_destroy(r->async_rconn);
for (i = 0; i < 2; i++) {
struct half *this = &r->halves[i];
rconn_destroy(this->rconn);
free(r);
}
\f
-/* Port status watcher. */
-
-typedef void port_watcher_cb_func(uint16_t port_no,
- const struct ofp_phy_port *old,
- const struct ofp_phy_port *new,
- void *aux);
-
-struct port_watcher_cb {
- port_watcher_cb_func *function;
- void *aux;
-};
-
-struct port_watcher {
- struct rconn *local_rconn;
- struct rconn *remote_rconn;
- struct ofp_phy_port ports[OFPP_MAX + 1];
- time_t last_feature_request;
- bool got_feature_reply;
- int n_txq;
- struct port_watcher_cb cbs[2];
- int n_cbs;
-};
-
-/* Returns the number of fields that differ from 'a' to 'b'. */
-static int
-opp_differs(const struct ofp_phy_port *a, const struct ofp_phy_port *b)
-{
- BUILD_ASSERT_DECL(sizeof *a == 36); /* Trips when we add or remove fields. */
- return ((a->port_no != b->port_no)
- + (memcmp(a->hw_addr, b->hw_addr, sizeof a->hw_addr) != 0)
- + (memcmp(a->name, b->name, sizeof a->name) != 0)
- + (a->flags != b->flags)
- + (a->speed != b->speed)
- + (a->features != b->features));
-}
+/* User interface. */
static void
-sanitize_opp(struct ofp_phy_port *opp)
+parse_options(int argc, char *argv[], struct settings *s)
{
- size_t i;
-
- for (i = 0; i < sizeof opp->name; i++) {
- char c = opp->name[i];
- if (c && (c < 0x20 || c > 0x7e)) {
- opp->name[i] = '.';
- }
- }
- opp->name[sizeof opp->name - 1] = '\0';
-}
+ enum {
+ OPT_ACCEPT_VCONN = UCHAR_MAX + 1,
+ OPT_NO_RESOLV_CONF,
+ OPT_INACTIVITY_PROBE,
+ OPT_MAX_IDLE,
+ OPT_MAX_BACKOFF,
+ OPT_RATE_LIMIT,
+ OPT_BURST_LIMIT,
+ OPT_BOOTSTRAP_CA_CERT,
+ OPT_STP,
+ OPT_NO_STP,
+ OPT_OUT_OF_BAND,
+ OPT_IN_BAND,
+ OPT_COMMAND_ACL,
+ OPT_COMMAND_DIR,
+ VLOG_OPTION_ENUMS
+ };
+ static struct option long_options[] = {
+ {"accept-vconn", required_argument, 0, OPT_ACCEPT_VCONN},
+ {"no-resolv-conf", no_argument, 0, OPT_NO_RESOLV_CONF},
+ {"fail", required_argument, 0, 'F'},
+ {"inactivity-probe", required_argument, 0, OPT_INACTIVITY_PROBE},
+ {"max-idle", required_argument, 0, OPT_MAX_IDLE},
+ {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
+ {"listen", required_argument, 0, 'l'},
+ {"monitor", required_argument, 0, 'm'},
+ {"rate-limit", optional_argument, 0, OPT_RATE_LIMIT},
+ {"burst-limit", required_argument, 0, OPT_BURST_LIMIT},
+ {"stp", no_argument, 0, OPT_STP},
+ {"no-stp", no_argument, 0, OPT_NO_STP},
+ {"out-of-band", no_argument, 0, OPT_OUT_OF_BAND},
+ {"in-band", no_argument, 0, OPT_IN_BAND},
+ {"command-acl", required_argument, 0, OPT_COMMAND_ACL},
+ {"command-dir", required_argument, 0, OPT_COMMAND_DIR},
+ {"verbose", optional_argument, 0, 'v'},
+ {"help", no_argument, 0, 'h'},
+ {"version", no_argument, 0, 'V'},
+ DAEMON_LONG_OPTIONS,
+ VLOG_LONG_OPTIONS,
+#ifdef HAVE_OPENSSL
+ VCONN_SSL_LONG_OPTIONS
+ {"bootstrap-ca-cert", required_argument, 0, OPT_BOOTSTRAP_CA_CERT},
+#endif
+ {0, 0, 0, 0},
+ };
+ char *short_options = long_options_to_short_options(long_options);
+ char *accept_re = NULL;
+ int retval;
-static int
-port_no_to_pw_idx(int port_no)
-{
- return (port_no < OFPP_MAX ? port_no
- : port_no == OFPP_LOCAL ? OFPP_MAX
- : -1);
-}
+ /* Set defaults that we can figure out before parsing options. */
+ s->n_listeners = 0;
+ s->monitor_name = NULL;
+ s->fail_mode = FAIL_OPEN;
+ s->max_idle = 15;
+ s->probe_interval = 15;
+ s->max_backoff = 15;
+ s->update_resolv_conf = true;
+ s->rate_limit = 0;
+ s->burst_limit = 0;
+ s->enable_stp = false;
+ s->in_band = true;
+ s->command_acl = "";
+ s->command_dir = xasprintf("%s/commands", ofp_pkgdatadir);
+ for (;;) {
+ int c;
-static void
-call_pw_callbacks(struct port_watcher *pw, int port_no,
- const struct ofp_phy_port *old,
- const struct ofp_phy_port *new)
-{
- if (opp_differs(old, new)) {
- int i;
- for (i = 0; i < pw->n_cbs; i++) {
- pw->cbs[i].function(port_no, old, new, pw->cbs[i].aux);
+ c = getopt_long(argc, argv, short_options, long_options, NULL);
+ if (c == -1) {
+ break;
}
- }
-}
-static void
-update_phy_port(struct port_watcher *pw, struct ofp_phy_port *opp,
- uint8_t reason, bool seen[OFPP_MAX + 1])
-{
- struct ofp_phy_port *pw_opp;
- struct ofp_phy_port old;
- uint16_t port_no;
- int idx;
-
- port_no = ntohs(opp->port_no);
- idx = port_no_to_pw_idx(port_no);
- if (idx < 0) {
- return;
- }
+ switch (c) {
+ case OPT_ACCEPT_VCONN:
+ accept_re = optarg[0] == '^' ? optarg : xasprintf("^%s", optarg);
+ break;
- if (seen) {
- seen[idx] = true;
- }
+ case OPT_NO_RESOLV_CONF:
+ s->update_resolv_conf = false;
+ break;
- pw_opp = &pw->ports[idx];
- old = *pw_opp;
- if (reason == OFPPR_DELETE) {
- memset(pw_opp, 0, sizeof *pw_opp);
- pw_opp->port_no = htons(OFPP_NONE);
- } else if (reason == OFPPR_MOD || reason == OFPPR_ADD) {
- *pw_opp = *opp;
- sanitize_opp(pw_opp);
- }
- call_pw_callbacks(pw, port_no, &old, pw_opp);
-}
+ case 'F':
+ if (!strcmp(optarg, "open")) {
+ s->fail_mode = FAIL_OPEN;
+ } else if (!strcmp(optarg, "closed")) {
+ s->fail_mode = FAIL_CLOSED;
+ } else {
+ ofp_fatal(0, "-f or --fail argument must be \"open\" "
+ "or \"closed\"");
+ }
+ break;
-static bool
-port_watcher_local_packet_cb(struct relay *r, void *pw_)
-{
- struct port_watcher *pw = pw_;
- struct ofpbuf *msg = r->halves[HALF_LOCAL].rxbuf;
- struct ofp_header *oh = msg->data;
+ case OPT_INACTIVITY_PROBE:
+ s->probe_interval = atoi(optarg);
+ if (s->probe_interval < 5) {
+ ofp_fatal(0, "--inactivity-probe argument must be at least 5");
+ }
+ break;
- if (oh->type == OFPT_FEATURES_REPLY
- && msg->size >= offsetof(struct ofp_switch_features, ports)) {
- struct ofp_switch_features *osf = msg->data;
- bool seen[ARRAY_SIZE(pw->ports)];
- size_t n_ports;
- size_t i;
+ case OPT_MAX_IDLE:
+ if (!strcmp(optarg, "permanent")) {
+ s->max_idle = OFP_FLOW_PERMANENT;
+ } else {
+ s->max_idle = atoi(optarg);
+ if (s->max_idle < 1 || s->max_idle > 65535) {
+ ofp_fatal(0, "--max-idle argument must be between 1 and "
+ "65535 or the word 'permanent'");
+ }
+ }
+ break;
- pw->got_feature_reply = true;
+ case OPT_MAX_BACKOFF:
+ s->max_backoff = atoi(optarg);
+ if (s->max_backoff < 1) {
+ ofp_fatal(0, "--max-backoff argument must be at least 1");
+ } else if (s->max_backoff > 3600) {
+ s->max_backoff = 3600;
+ }
+ break;
- /* Update each port included in the message. */
- memset(seen, 0, sizeof seen);
- n_ports = ((msg->size - offsetof(struct ofp_switch_features, ports))
- / sizeof *osf->ports);
- for (i = 0; i < n_ports; i++) {
- update_phy_port(pw, &osf->ports[i], OFPPR_MOD, seen);
- }
+ case OPT_RATE_LIMIT:
+ if (optarg) {
+ s->rate_limit = atoi(optarg);
+ if (s->rate_limit < 1) {
+ ofp_fatal(0, "--rate-limit argument must be at least 1");
+ }
+ } else {
+ s->rate_limit = 1000;
+ }
+ break;
- /* Delete all the ports not included in the message. */
- for (i = 0; i < ARRAY_SIZE(pw->ports); i++) {
- if (!seen[i]) {
- update_phy_port(pw, &pw->ports[i], OFPPR_DELETE, NULL);
+ case OPT_BURST_LIMIT:
+ s->burst_limit = atoi(optarg);
+ if (s->burst_limit < 1) {
+ ofp_fatal(0, "--burst-limit argument must be at least 1");
}
- }
- } else if (oh->type == OFPT_PORT_STATUS
- && msg->size >= sizeof(struct ofp_port_status)) {
- struct ofp_port_status *ops = msg->data;
- update_phy_port(pw, &ops->desc, ops->reason, NULL);
- }
- return false;
-}
+ break;
-static bool
-port_watcher_remote_packet_cb(struct relay *r, void *pw_)
-{
- struct port_watcher *pw = pw_;
- struct ofpbuf *msg = r->halves[HALF_REMOTE].rxbuf;
- struct ofp_header *oh = msg->data;
+ case OPT_STP:
+ s->enable_stp = true;
+ break;
- if (oh->type == OFPT_PORT_MOD
- && msg->size >= sizeof(struct ofp_port_mod)) {
- struct ofp_port_mod *opm = msg->data;
- uint16_t port_no = ntohs(opm->desc.port_no);
- int idx = port_no_to_pw_idx(port_no);
- if (idx >= 0) {
- struct ofp_phy_port *pw_opp = &pw->ports[idx];
- if (pw_opp->port_no != htons(OFPP_NONE)) {
- struct ofp_phy_port old = *pw_opp;
- pw_opp->flags = ((pw_opp->flags & ~opm->mask)
- | (opm->desc.flags & opm->mask));
- call_pw_callbacks(pw, port_no, &old, pw_opp);
- }
- }
- }
- return false;
-}
+ case OPT_NO_STP:
+ s->enable_stp = false;
+ break;
-static void
-port_watcher_periodic_cb(void *pw_)
-{
- struct port_watcher *pw = pw_;
+ case OPT_OUT_OF_BAND:
+ s->in_band = false;
+ break;
- if (!pw->got_feature_reply && time_now() >= pw->last_feature_request + 5) {
- struct ofpbuf *b;
- make_openflow(sizeof(struct ofp_header), OFPT_FEATURES_REQUEST, &b);
- rconn_send_with_limit(pw->local_rconn, b, &pw->n_txq, 1);
- pw->last_feature_request = time_now();
- }
-}
+ case OPT_IN_BAND:
+ s->in_band = true;
+ break;
-static void
-put_duplexes(struct ds *ds, const char *name, uint32_t features,
- uint32_t hd_bit, uint32_t fd_bit)
-{
- if (features & (hd_bit | fd_bit)) {
- ds_put_format(ds, " %s", name);
- if (features & hd_bit) {
- ds_put_cstr(ds, "(HD)");
- }
- if (features & fd_bit) {
- ds_put_cstr(ds, "(FD)");
- }
- }
-}
+ case OPT_COMMAND_ACL:
+ s->command_acl = (s->command_acl[0]
+ ? xasprintf("%s,%s", s->command_acl, optarg)
+ : optarg);
+ break;
-static void
-log_port_status(uint16_t port_no,
- const struct ofp_phy_port *old,
- const struct ofp_phy_port *new,
- void *aux)
-{
- if (VLOG_IS_DBG_ENABLED()) {
- bool was_enabled = old->port_no != htons(OFPP_NONE);
- bool now_enabled = new->port_no != htons(OFPP_NONE);
- uint32_t features = ntohl(new->features);
- struct ds ds;
-
- if (old->flags != new->flags && opp_differs(old, new) == 1) {
- /* Don't care if only flags changed. */
- return;
- }
+ case OPT_COMMAND_DIR:
+ s->command_dir = optarg;
+ break;
- ds_init(&ds);
- ds_put_format(&ds, "\"%s\", "ETH_ADDR_FMT, new->name,
- ETH_ADDR_ARGS(new->hw_addr));
- if (ntohl(new->speed)) {
- ds_put_format(&ds, ", speed %"PRIu32, ntohl(new->speed));
- }
- if (features & (OFPPF_10MB_HD | OFPPF_10MB_FD
- | OFPPF_100MB_HD | OFPPF_100MB_FD
- | OFPPF_1GB_HD | OFPPF_1GB_FD | OFPPF_10GB_FD)) {
- ds_put_cstr(&ds, ", supports");
- put_duplexes(&ds, "10M", features, OFPPF_10MB_HD, OFPPF_10MB_FD);
- put_duplexes(&ds, "100M", features,
- OFPPF_100MB_HD, OFPPF_100MB_FD);
- put_duplexes(&ds, "1G", features, OFPPF_100MB_HD, OFPPF_100MB_FD);
- if (features & OFPPF_10GB_FD) {
- ds_put_cstr(&ds, " 10G");
+ case 'l':
+ if (s->n_listeners >= MAX_MGMT) {
+ ofp_fatal(0,
+ "-l or --listen may be specified at most %d times",
+ MAX_MGMT);
}
- }
- if (was_enabled != now_enabled) {
- if (now_enabled) {
- VLOG_DBG("Port %d added: %s", port_no, ds_cstr(&ds));
- } else {
- VLOG_DBG("Port %d deleted", port_no);
+ s->listener_names[s->n_listeners++] = optarg;
+ break;
+
+ case 'm':
+ if (s->monitor_name) {
+ ofp_fatal(0, "-m or --monitor may only be specified once");
}
- } else {
- VLOG_DBG("Port %d changed: %s", port_no, ds_cstr(&ds));
- }
- ds_destroy(&ds);
- }
-}
+ s->monitor_name = optarg;
+ break;
-static void
-port_watcher_register_callback(struct port_watcher *pw,
- port_watcher_cb_func *function,
- void *aux)
-{
- assert(pw->n_cbs < ARRAY_SIZE(pw->cbs));
- pw->cbs[pw->n_cbs].function = function;
- pw->cbs[pw->n_cbs].aux = aux;
- pw->n_cbs++;
-}
+ case 'h':
+ usage();
-static uint32_t
-port_watcher_get_flags(const struct port_watcher *pw, int port_no)
-{
- int idx = port_no_to_pw_idx(port_no);
- return idx >= 0 ? ntohl(pw->ports[idx].flags) : 0;
-}
+ case 'V':
+ printf("%s %s compiled "__DATE__" "__TIME__"\n",
+ program_name, VERSION BUILDNR);
+ exit(EXIT_SUCCESS);
-static void
-port_watcher_set_flags(struct port_watcher *pw,
- int port_no, uint32_t flags, uint32_t mask)
-{
- struct ofp_phy_port old;
- struct ofp_phy_port *p;
- struct ofp_port_mod *opm;
- struct ofp_port_status *ops;
- struct ofpbuf *b;
- int idx;
-
- idx = port_no_to_pw_idx(port_no);
- if (idx < 0) {
- return;
- }
+ DAEMON_OPTION_HANDLERS
- p = &pw->ports[idx];
- if (!((ntohl(p->flags) ^ flags) & mask)) {
- return;
- }
- old = *p;
-
- /* Update our idea of the flags. */
- p->flags = htonl((ntohl(p->flags) & ~mask) | (flags & mask));
- call_pw_callbacks(pw, port_no, &old, p);
-
- /* Change the flags in the datapath. */
- opm = make_openflow(sizeof *opm, OFPT_PORT_MOD, &b);
- opm->mask = htonl(mask);
- opm->desc = *p;
- rconn_send(pw->local_rconn, b, NULL);
-
- /* Notify the controller that the flags changed. */
- ops = make_openflow(sizeof *ops, OFPT_PORT_STATUS, &b);
- ops->reason = OFPPR_MOD;
- ops->desc = *p;
- rconn_send(pw->remote_rconn, b, NULL);
-}
+ VLOG_OPTION_HANDLERS
-static bool
-port_watcher_is_ready(const struct port_watcher *pw)
-{
- return pw->got_feature_reply;
-}
+#ifdef HAVE_OPENSSL
+ VCONN_SSL_OPTION_HANDLERS
-static struct hook
-port_watcher_create(struct rconn *local_rconn, struct rconn *remote_rconn,
- struct port_watcher **pwp)
-{
- struct port_watcher *pw;
- int i;
-
- pw = *pwp = xcalloc(1, sizeof *pw);
- pw->local_rconn = local_rconn;
- pw->remote_rconn = remote_rconn;
- pw->last_feature_request = TIME_MIN;
- for (i = 0; i < OFPP_MAX; i++) {
- pw->ports[i].port_no = htons(OFPP_NONE);
- }
- port_watcher_register_callback(pw, log_port_status, NULL);
- return make_hook(port_watcher_local_packet_cb,
- port_watcher_remote_packet_cb,
- port_watcher_periodic_cb, NULL, pw);
-}
-\f
-/* Spanning tree protocol. */
-
-/* Extra time, in seconds, at boot before going into fail-open, to give the
- * spanning tree protocol time to figure out the network layout. */
-#define STP_EXTRA_BOOT_TIME 30
-
-struct stp_data {
- struct stp *stp;
- struct port_watcher *pw;
- struct rconn *local_rconn;
- struct rconn *remote_rconn;
- uint8_t dpid[ETH_ADDR_LEN];
- long long int last_tick_256ths;
- int n_txq;
-};
-
-static bool
-stp_local_packet_cb(struct relay *r, void *stp_)
-{
- struct stp_data *stp = stp_;
- struct ofp_packet_in *opi;
- struct eth_header *eth;
- struct llc_header *llc;
- struct ofpbuf payload;
- uint16_t port_no;
- struct flow flow;
-
- if (!get_ofp_packet_eth_header(r, &opi, ð)
- || !eth_addr_equals(eth->eth_dst, stp_eth_addr)) {
- return false;
- }
-
- port_no = ntohs(opi->in_port);
- if (port_no >= STP_MAX_PORTS) {
- /* STP only supports 255 ports. */
- return false;
- }
- if (port_watcher_get_flags(stp->pw, port_no) & OFPPFL_NO_STP) {
- /* We're not doing STP on this port. */
- return false;
- }
-
- if (opi->reason == OFPR_ACTION) {
- /* The controller set up a flow for this, so we won't intercept it. */
- return false;
- }
-
- get_ofp_packet_payload(opi, &payload);
- flow_extract(&payload, port_no, &flow);
- if (flow.dl_type != htons(OFP_DL_TYPE_NOT_ETH_TYPE)) {
- VLOG_DBG("non-LLC frame received on STP multicast address");
- return false;
- }
- llc = ofpbuf_at_assert(&payload, sizeof *eth, sizeof *llc);
- if (llc->llc_dsap != STP_LLC_DSAP) {
- VLOG_DBG("bad DSAP 0x%02"PRIx8" received on STP multicast address",
- llc->llc_dsap);
- return false;
- }
-
- /* Trim off padding on payload. */
- if (payload.size > ntohs(eth->eth_type) + ETH_HEADER_LEN) {
- payload.size = ntohs(eth->eth_type) + ETH_HEADER_LEN;
- }
- if (ofpbuf_try_pull(&payload, ETH_HEADER_LEN + LLC_HEADER_LEN)) {
- struct stp_port *p = stp_get_port(stp->stp, port_no);
- stp_received_bpdu(p, payload.data, payload.size);
- }
-
- return true;
-}
-
-static long long int
-time_256ths(void)
-{
- return time_msec() * 256 / 1000;
-}
-
-static void
-stp_periodic_cb(void *stp_)
-{
- struct stp_data *stp = stp_;
- long long int now_256ths = time_256ths();
- long long int elapsed_256ths = now_256ths - stp->last_tick_256ths;
- struct stp_port *p;
-
- if (!port_watcher_is_ready(stp->pw)) {
- /* Can't start STP until we know port flags, because port flags can
- * disable STP. */
- return;
- }
- if (elapsed_256ths <= 0) {
- return;
- }
-
- stp_tick(stp->stp, MIN(INT_MAX, elapsed_256ths));
- stp->last_tick_256ths = now_256ths;
-
- while (stp_get_changed_port(stp->stp, &p)) {
- int port_no = stp_port_no(p);
- enum stp_state state = stp_port_get_state(p);
-
- if (state != STP_DISABLED) {
- VLOG_WARN("STP: Port %d entered %s state",
- port_no, stp_state_name(state));
- }
- if (!(port_watcher_get_flags(stp->pw, port_no) & OFPPFL_NO_STP)) {
- uint32_t flags;
- switch (state) {
- case STP_LISTENING:
- flags = OFPPFL_STP_LISTEN;
- break;
- case STP_LEARNING:
- flags = OFPPFL_STP_LEARN;
- break;
- case STP_DISABLED:
- case STP_FORWARDING:
- flags = OFPPFL_STP_FORWARD;
- break;
- case STP_BLOCKING:
- flags = OFPPFL_STP_BLOCK;
- break;
- default:
- VLOG_DBG_RL(&vrl, "STP: Port %d has bad state %x",
- port_no, state);
- flags = OFPPFL_STP_FORWARD;
- break;
- }
- if (!stp_forward_in_state(state)) {
- flags |= OFPPFL_NO_FLOOD;
- }
- port_watcher_set_flags(stp->pw, port_no, flags,
- OFPPFL_STP_MASK | OFPPFL_NO_FLOOD);
- } else {
- /* We don't own those flags. */
- }
- }
-}
-
-static void
-stp_wait_cb(void *stp_ UNUSED)
-{
- poll_timer_wait(1000);
-}
-
-static void
-send_bpdu(const void *bpdu, size_t bpdu_size, int port_no, void *stp_)
-{
- struct stp_data *stp = stp_;
- struct eth_header *eth;
- struct llc_header *llc;
- struct ofpbuf pkt, *opo;
-
- /* Packet skeleton. */
- ofpbuf_init(&pkt, ETH_HEADER_LEN + LLC_HEADER_LEN + bpdu_size);
- eth = ofpbuf_put_uninit(&pkt, sizeof *eth);
- llc = ofpbuf_put_uninit(&pkt, sizeof *llc);
- ofpbuf_put(&pkt, bpdu, bpdu_size);
-
- /* 802.2 header. */
- memcpy(eth->eth_dst, stp_eth_addr, ETH_ADDR_LEN);
- memcpy(eth->eth_src, stp->pw->ports[port_no].hw_addr, ETH_ADDR_LEN);
- eth->eth_type = htons(pkt.size - ETH_HEADER_LEN);
-
- /* LLC header. */
- llc->llc_dsap = STP_LLC_DSAP;
- llc->llc_ssap = STP_LLC_SSAP;
- llc->llc_cntl = STP_LLC_CNTL;
-
- opo = make_unbuffered_packet_out(&pkt, OFPP_NONE, port_no);
- ofpbuf_uninit(&pkt);
- rconn_send_with_limit(stp->local_rconn, opo, &stp->n_txq, OFPP_MAX);
-}
-
-static void
-stp_port_watcher_cb(uint16_t port_no,
- const struct ofp_phy_port *old,
- const struct ofp_phy_port *new,
- void *stp_)
-{
- struct stp_data *stp = stp_;
- struct stp_port *p;
-
- /* STP only supports a maximum of 255 ports, one less than OpenFlow. We
- * don't support STP on OFPP_LOCAL, either. */
- if (port_no >= STP_MAX_PORTS) {
- return;
- }
-
- p = stp_get_port(stp->stp, port_no);
- if (new->port_no == htons(OFPP_NONE)
- || new->flags & htonl(OFPPFL_NO_STP)) {
- stp_port_disable(p);
- } else {
- stp_port_enable(p);
- stp_port_set_speed(p, new->speed);
- }
-}
-
-static struct hook
-stp_hook_create(const struct settings *s, struct port_watcher *pw,
- struct rconn *local, struct rconn *remote)
-{
- uint8_t dpid[ETH_ADDR_LEN];
- struct netdev *netdev;
- struct stp_data *stp;
- int retval;
-
- retval = netdev_open(s->of_name, NETDEV_ETH_TYPE_NONE, &netdev);
- if (retval) {
- ofp_fatal(retval, "Could not open %s device", s->of_name);
- }
- memcpy(dpid, netdev_get_etheraddr(netdev), ETH_ADDR_LEN);
- netdev_close(netdev);
-
- stp = xcalloc(1, sizeof *stp);
- stp->stp = stp_create("stp", eth_addr_to_uint64(dpid), send_bpdu, stp);
- stp->pw = pw;
- memcpy(stp->dpid, dpid, ETH_ADDR_LEN);
- stp->local_rconn = local;
- stp->remote_rconn = remote;
- stp->last_tick_256ths = time_256ths();
-
- port_watcher_register_callback(pw, stp_port_watcher_cb, stp);
- return make_hook(stp_local_packet_cb, NULL,
- stp_periodic_cb, stp_wait_cb, stp);
-}
-\f
-/* In-band control. */
-
-struct in_band_data {
- const struct settings *s;
- struct mac_learning *ml;
- struct netdev *of_device;
- struct rconn *controller;
- uint8_t mac[ETH_ADDR_LEN];
- int n_queued;
-};
-
-static void
-queue_tx(struct rconn *rc, struct in_band_data *in_band, struct ofpbuf *b)
-{
- rconn_send_with_limit(rc, b, &in_band->n_queued, 10);
-}
-
-static const uint8_t *
-get_controller_mac(struct in_band_data *in_band)
-{
- static uint32_t ip, last_nonzero_ip;
- static uint8_t mac[ETH_ADDR_LEN], last_nonzero_mac[ETH_ADDR_LEN];
- static time_t next_refresh = 0;
-
- uint32_t last_ip = ip;
-
- time_t now = time_now();
-
- ip = rconn_get_ip(in_band->controller);
- if (last_ip != ip || !next_refresh || now >= next_refresh) {
- bool have_mac;
-
- /* Look up MAC address. */
- memset(mac, 0, sizeof mac);
- if (ip) {
- int retval = netdev_arp_lookup(in_band->of_device, ip, mac);
- if (retval) {
- VLOG_DBG("cannot look up controller hw address ("IP_FMT"): %s",
- IP_ARGS(&ip), strerror(retval));
- }
- }
- have_mac = !eth_addr_is_zero(mac);
-
- /* Log changes in IP, MAC addresses. */
- if (ip && ip != last_nonzero_ip) {
- VLOG_DBG("controller IP address changed from "IP_FMT
- " to "IP_FMT, IP_ARGS(&last_nonzero_ip), IP_ARGS(&ip));
- last_nonzero_ip = ip;
- }
- if (have_mac && memcmp(last_nonzero_mac, mac, ETH_ADDR_LEN)) {
- VLOG_DBG("controller MAC address changed from "ETH_ADDR_FMT" to "
- ETH_ADDR_FMT,
- ETH_ADDR_ARGS(last_nonzero_mac), ETH_ADDR_ARGS(mac));
- memcpy(last_nonzero_mac, mac, ETH_ADDR_LEN);
- }
-
- /* Schedule next refresh.
- *
- * If we have an IP address but not a MAC address, then refresh
- * quickly, since we probably will get a MAC address soon (via ARP).
- * Otherwise, we can afford to wait a little while. */
- next_refresh = now + (!ip || have_mac ? 10 : 1);
- }
- return !eth_addr_is_zero(mac) ? mac : NULL;
-}
-
-static bool
-is_controller_mac(const uint8_t dl_addr[ETH_ADDR_LEN],
- struct in_band_data *in_band)
-{
- const uint8_t *mac = get_controller_mac(in_band);
- return mac && eth_addr_equals(mac, dl_addr);
-}
-
-static void
-in_band_learn_mac(struct in_band_data *in_band,
- uint16_t in_port, const uint8_t src_mac[ETH_ADDR_LEN])
-{
- if (mac_learning_learn(in_band->ml, src_mac, in_port)) {
- VLOG_DBG_RL(&vrl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
- ETH_ADDR_ARGS(src_mac), in_port);
- }
-}
-
-static bool
-in_band_local_packet_cb(struct relay *r, void *in_band_)
-{
- struct in_band_data *in_band = in_band_;
- struct rconn *rc = r->halves[HALF_LOCAL].rconn;
- struct ofp_packet_in *opi;
- struct eth_header *eth;
- struct ofpbuf payload;
- struct flow flow;
- uint16_t in_port;
- int out_port;
-
- if (!get_ofp_packet_eth_header(r, &opi, ð)) {
- return false;
- }
- in_port = ntohs(opi->in_port);
-
- /* Deal with local stuff. */
- if (in_port == OFPP_LOCAL) {
- /* Sent by secure channel. */
- out_port = mac_learning_lookup(in_band->ml, eth->eth_dst);
- } else if (eth_addr_equals(eth->eth_dst, in_band->mac)) {
- /* Sent to secure channel. */
- out_port = OFPP_LOCAL;
- in_band_learn_mac(in_band, in_port, eth->eth_src);
- } else if (eth->eth_type == htons(ETH_TYPE_ARP)
- && eth_addr_is_broadcast(eth->eth_dst)
- && is_controller_mac(eth->eth_src, in_band)) {
- /* ARP sent by controller. */
- out_port = OFPP_FLOOD;
- } else if (is_controller_mac(eth->eth_dst, in_band)
- || is_controller_mac(eth->eth_src, in_band)) {
- /* Traffic to or from controller. Switch it by hand. */
- in_band_learn_mac(in_band, in_port, eth->eth_src);
- out_port = mac_learning_lookup(in_band->ml, eth->eth_dst);
- } else {
- const uint8_t *controller_mac;
- controller_mac = get_controller_mac(in_band);
- if (eth->eth_type == htons(ETH_TYPE_ARP)
- && eth_addr_is_broadcast(eth->eth_dst)
- && is_controller_mac(eth->eth_src, in_band)) {
- /* ARP sent by controller. */
- out_port = OFPP_FLOOD;
- } else if (is_controller_mac(eth->eth_dst, in_band)
- && in_port == mac_learning_lookup(in_band->ml,
- controller_mac)) {
- /* Drop controller traffic that arrives on the controller port. */
- out_port = -1;
- } else {
- return false;
- }
- }
-
- get_ofp_packet_payload(opi, &payload);
- flow_extract(&payload, in_port, &flow);
- if (in_port == out_port) {
- /* The input and output port match. Set up a flow to drop packets. */
- queue_tx(rc, in_band, make_add_flow(&flow, ntohl(opi->buffer_id),
- in_band->s->max_idle, 0));
- } else if (out_port != OFPP_FLOOD) {
- /* The output port is known, so add a new flow. */
- queue_tx(rc, in_band,
- make_add_simple_flow(&flow, ntohl(opi->buffer_id),
- out_port, in_band->s->max_idle));
-
- /* If the switch didn't buffer the packet, we need to send a copy. */
- if (ntohl(opi->buffer_id) == UINT32_MAX) {
- queue_tx(rc, in_band,
- make_unbuffered_packet_out(&payload, in_port, out_port));
- }
- } else {
- /* We don't know that MAC. Send along the packet without setting up a
- * flow. */
- struct ofpbuf *b;
- if (ntohl(opi->buffer_id) == UINT32_MAX) {
- b = make_unbuffered_packet_out(&payload, in_port, out_port);
- } else {
- b = make_buffered_packet_out(ntohl(opi->buffer_id),
- in_port, out_port);
- }
- queue_tx(rc, in_band, b);
- }
- return true;
-}
-
-static void
-in_band_status_cb(struct status_reply *sr, void *in_band_)
-{
- struct in_band_data *in_band = in_band_;
- struct in_addr local_ip;
- uint32_t controller_ip;
- const uint8_t *controller_mac;
-
- if (netdev_get_in4(in_band->of_device, &local_ip)) {
- status_reply_put(sr, "local-ip="IP_FMT, IP_ARGS(&local_ip.s_addr));
- }
- status_reply_put(sr, "local-mac="ETH_ADDR_FMT,
- ETH_ADDR_ARGS(in_band->mac));
-
- controller_ip = rconn_get_ip(in_band->controller);
- if (controller_ip) {
- status_reply_put(sr, "controller-ip="IP_FMT,
- IP_ARGS(&controller_ip));
- }
- controller_mac = get_controller_mac(in_band);
- if (controller_mac) {
- status_reply_put(sr, "controller-mac="ETH_ADDR_FMT,
- ETH_ADDR_ARGS(controller_mac));
- }
-}
-
-static void
-get_ofp_packet_payload(struct ofp_packet_in *opi, struct ofpbuf *payload)
-{
- payload->data = opi->data;
- payload->size = ntohs(opi->header.length) - offsetof(struct ofp_packet_in,
- data);
-}
-
-static struct hook
-in_band_hook_create(const struct settings *s, struct switch_status *ss,
- struct rconn *remote)
-{
- struct in_band_data *in_band;
- int retval;
-
- in_band = xcalloc(1, sizeof *in_band);
- in_band->s = s;
- in_band->ml = mac_learning_create();
- retval = netdev_open(s->of_name, NETDEV_ETH_TYPE_NONE,
- &in_band->of_device);
- if (retval) {
- ofp_fatal(retval, "Could not open %s device", s->of_name);
- }
- memcpy(in_band->mac, netdev_get_etheraddr(in_band->of_device),
- ETH_ADDR_LEN);
- in_band->controller = remote;
- switch_status_register_category(ss, "in-band", in_band_status_cb, in_band);
- return make_hook(in_band_local_packet_cb, NULL, NULL, NULL, in_band);
-}
-\f
-/* Fail open support. */
-
-struct fail_open_data {
- const struct settings *s;
- struct rconn *local_rconn;
- struct rconn *remote_rconn;
- struct lswitch *lswitch;
- int last_disconn_secs;
- time_t boot_deadline;
-};
-
-/* Causes 'r' to enter or leave fail-open mode, if appropriate. */
-static void
-fail_open_periodic_cb(void *fail_open_)
-{
- struct fail_open_data *fail_open = fail_open_;
- int disconn_secs;
- bool open;
-
- if (time_now() < fail_open->boot_deadline) {
- return;
- }
- disconn_secs = rconn_disconnected_duration(fail_open->remote_rconn);
- open = disconn_secs >= fail_open->s->probe_interval * 3;
- if (open != (fail_open->lswitch != NULL)) {
- if (!open) {
- VLOG_WARN("No longer in fail-open mode");
- lswitch_destroy(fail_open->lswitch);
- fail_open->lswitch = NULL;
- } else {
- VLOG_WARN("Could not connect to controller for %d seconds, "
- "failing open", disconn_secs);
- fail_open->lswitch = lswitch_create(fail_open->local_rconn, true,
- fail_open->s->max_idle);
- fail_open->last_disconn_secs = disconn_secs;
- }
- } else if (open && disconn_secs > fail_open->last_disconn_secs + 60) {
- VLOG_WARN("Still in fail-open mode after %d seconds disconnected "
- "from controller", disconn_secs);
- fail_open->last_disconn_secs = disconn_secs;
- }
-}
-
-static bool
-fail_open_local_packet_cb(struct relay *r, void *fail_open_)
-{
- struct fail_open_data *fail_open = fail_open_;
- if (!fail_open->lswitch) {
- return false;
- } else {
- lswitch_process_packet(fail_open->lswitch, fail_open->local_rconn,
- r->halves[HALF_LOCAL].rxbuf);
- rconn_run(fail_open->local_rconn);
- return true;
- }
-}
-
-static void
-fail_open_status_cb(struct status_reply *sr, void *fail_open_)
-{
- struct fail_open_data *fail_open = fail_open_;
- const struct settings *s = fail_open->s;
- int trigger_duration = s->probe_interval * 3;
- int cur_duration = rconn_disconnected_duration(fail_open->remote_rconn);
-
- status_reply_put(sr, "trigger-duration=%d", trigger_duration);
- status_reply_put(sr, "current-duration=%d", cur_duration);
- status_reply_put(sr, "triggered=%s",
- cur_duration >= trigger_duration ? "true" : "false");
- status_reply_put(sr, "max-idle=%d", s->max_idle);
-}
-
-static struct hook
-fail_open_hook_create(const struct settings *s, struct switch_status *ss,
- struct rconn *local_rconn, struct rconn *remote_rconn)
-{
- struct fail_open_data *fail_open = xmalloc(sizeof *fail_open);
- fail_open->s = s;
- fail_open->local_rconn = local_rconn;
- fail_open->remote_rconn = remote_rconn;
- fail_open->lswitch = NULL;
- fail_open->boot_deadline = time_now() + s->probe_interval * 3;
- fail_open->boot_deadline += STP_EXTRA_BOOT_TIME;
- switch_status_register_category(ss, "fail-open",
- fail_open_status_cb, fail_open);
- return make_hook(fail_open_local_packet_cb, NULL,
- fail_open_periodic_cb, NULL, fail_open);
-}
-\f
-struct rate_limiter {
- const struct settings *s;
- struct rconn *remote_rconn;
-
- /* One queue per physical port. */
- struct ofp_queue queues[OFPP_MAX];
- int n_queued; /* Sum over queues[*].n. */
- int next_tx_port; /* Next port to check in round-robin. */
-
- /* Token bucket.
- *
- * It costs 1000 tokens to send a single packet_in message. A single token
- * per message would be more straightforward, but this choice lets us avoid
- * round-off error in refill_bucket()'s calculation of how many tokens to
- * add to the bucket, since no division step is needed. */
- long long int last_fill; /* Time at which we last added tokens. */
- int tokens; /* Current number of tokens. */
-
- /* Transmission queue. */
- int n_txq; /* No. of packets waiting in rconn for tx. */
-
- /* Statistics reporting. */
- unsigned long long n_normal; /* # txed w/o rate limit queuing. */
- unsigned long long n_limited; /* # queued for rate limiting. */
- unsigned long long n_queue_dropped; /* # dropped due to queue overflow. */
- unsigned long long n_tx_dropped; /* # dropped due to tx overflow. */
-};
-
-/* Drop a packet from the longest queue in 'rl'. */
-static void
-drop_packet(struct rate_limiter *rl)
-{
- struct ofp_queue *longest; /* Queue currently selected as longest. */
- int n_longest; /* # of queues of same length as 'longest'. */
- struct ofp_queue *q;
-
- longest = &rl->queues[0];
- n_longest = 1;
- for (q = &rl->queues[0]; q < &rl->queues[OFPP_MAX]; q++) {
- if (longest->n < q->n) {
- longest = q;
- n_longest = 1;
- } else if (longest->n == q->n) {
- n_longest++;
-
- /* Randomly select one of the longest queues, with a uniform
- * distribution (Knuth algorithm 3.4.2R). */
- if (!random_range(n_longest)) {
- longest = q;
- }
- }
- }
-
- /* FIXME: do we want to pop the tail instead? */
- ofpbuf_delete(queue_pop_head(longest));
- rl->n_queued--;
-}
-
-/* Remove and return the next packet to transmit (in round-robin order). */
-static struct ofpbuf *
-dequeue_packet(struct rate_limiter *rl)
-{
- unsigned int i;
-
- for (i = 0; i < OFPP_MAX; i++) {
- unsigned int port = (rl->next_tx_port + i) % OFPP_MAX;
- struct ofp_queue *q = &rl->queues[port];
- if (q->n) {
- rl->next_tx_port = (port + 1) % OFPP_MAX;
- rl->n_queued--;
- return queue_pop_head(q);
- }
- }
- NOT_REACHED();
-}
-
-/* Add tokens to the bucket based on elapsed time. */
-static void
-refill_bucket(struct rate_limiter *rl)
-{
- const struct settings *s = rl->s;
- long long int now = time_msec();
- long long int tokens = (now - rl->last_fill) * s->rate_limit + rl->tokens;
- if (tokens >= 1000) {
- rl->last_fill = now;
- rl->tokens = MIN(tokens, s->burst_limit * 1000);
- }
-}
-
-/* Attempts to remove enough tokens from 'rl' to transmit a packet. Returns
- * true if successful, false otherwise. (In the latter case no tokens are
- * removed.) */
-static bool
-get_token(struct rate_limiter *rl)
-{
- if (rl->tokens >= 1000) {
- rl->tokens -= 1000;
- return true;
- } else {
- return false;
- }
-}
-
-static bool
-rate_limit_local_packet_cb(struct relay *r, void *rl_)
-{
- struct rate_limiter *rl = rl_;
- const struct settings *s = rl->s;
- struct ofp_packet_in *opi;
-
- opi = get_ofp_packet_in(r);
- if (!opi) {
- return false;
- }
-
- if (!rl->n_queued && get_token(rl)) {
- /* In the common case where we are not constrained by the rate limit,
- * let the packet take the normal path. */
- rl->n_normal++;
- return false;
- } else {
- /* Otherwise queue it up for the periodic callback to drain out. */
- struct ofpbuf *msg = r->halves[HALF_LOCAL].rxbuf;
- int port = ntohs(opi->in_port) % OFPP_MAX;
- if (rl->n_queued >= s->burst_limit) {
- drop_packet(rl);
- }
- queue_push_tail(&rl->queues[port], ofpbuf_clone(msg));
- rl->n_queued++;
- rl->n_limited++;
- return true;
- }
-}
-
-static void
-rate_limit_status_cb(struct status_reply *sr, void *rl_)
-{
- struct rate_limiter *rl = rl_;
-
- status_reply_put(sr, "normal=%llu", rl->n_normal);
- status_reply_put(sr, "limited=%llu", rl->n_limited);
- status_reply_put(sr, "queue-dropped=%llu", rl->n_queue_dropped);
- status_reply_put(sr, "tx-dropped=%llu", rl->n_tx_dropped);
-}
-
-static void
-rate_limit_periodic_cb(void *rl_)
-{
- struct rate_limiter *rl = rl_;
- int i;
-
- /* Drain some packets out of the bucket if possible, but limit the number
- * of iterations to allow other code to get work done too. */
- refill_bucket(rl);
- for (i = 0; rl->n_queued && get_token(rl) && i < 50; i++) {
- /* Use a small, arbitrary limit for the amount of queuing to do here,
- * because the TCP connection is responsible for buffering and there is
- * no point in trying to transmit faster than the TCP connection can
- * handle. */
- struct ofpbuf *b = dequeue_packet(rl);
- if (rconn_send_with_limit(rl->remote_rconn, b, &rl->n_txq, 10)) {
- rl->n_tx_dropped++;
- }
- }
-}
-
-static void
-rate_limit_wait_cb(void *rl_)
-{
- struct rate_limiter *rl = rl_;
- if (rl->n_queued) {
- if (rl->tokens >= 1000) {
- /* We can transmit more packets as soon as we're called again. */
- poll_immediate_wake();
- } else {
- /* We have to wait for the bucket to re-fill. We could calculate
- * the exact amount of time here for increased smoothness. */
- poll_timer_wait(TIME_UPDATE_INTERVAL / 2);
- }
- }
-}
-
-static struct hook
-rate_limit_hook_create(const struct settings *s, struct switch_status *ss,
- struct rconn *local, struct rconn *remote)
-{
- struct rate_limiter *rl;
- size_t i;
-
- rl = xcalloc(1, sizeof *rl);
- rl->s = s;
- rl->remote_rconn = remote;
- for (i = 0; i < ARRAY_SIZE(rl->queues); i++) {
- queue_init(&rl->queues[i]);
- }
- rl->last_fill = time_msec();
- rl->tokens = s->rate_limit * 100;
- switch_status_register_category(ss, "rate-limit",
- rate_limit_status_cb, rl);
- return make_hook(rate_limit_local_packet_cb, NULL, rate_limit_periodic_cb,
- rate_limit_wait_cb, rl);
-}
-\f
-/* OFPST_SWITCH statistics. */
-
-struct switch_status_category {
- char *name;
- void (*cb)(struct status_reply *, void *aux);
- void *aux;
-};
-
-struct switch_status {
- const struct settings *s;
- time_t booted;
- struct switch_status_category categories[8];
- int n_categories;
-};
-
-struct status_reply {
- struct switch_status_category *category;
- struct ds request;
- struct ds output;
-};
-
-static bool
-switch_status_remote_packet_cb(struct relay *r, void *ss_)
-{
- struct switch_status *ss = ss_;
- struct rconn *rc = r->halves[HALF_REMOTE].rconn;
- struct ofpbuf *msg = r->halves[HALF_REMOTE].rxbuf;
- struct switch_status_category *c;
- struct nicira_header *request;
- struct nicira_header *reply;
- struct status_reply sr;
- struct ofpbuf *b;
- int retval;
-
- if (msg->size < sizeof(struct nicira_header)) {
- return false;
- }
- request = msg->data;
- if (request->header.type != OFPT_VENDOR
- || request->vendor_id != htonl(NX_VENDOR_ID)
- || request->subtype != htonl(NXT_STATUS_REQUEST)) {
- return false;
- }
-
- sr.request.string = (void *) (request + 1);
- sr.request.length = msg->size - sizeof *request;
- ds_init(&sr.output);
- for (c = ss->categories; c < &ss->categories[ss->n_categories]; c++) {
- if (!memcmp(c->name, sr.request.string,
- MIN(strlen(c->name), sr.request.length))) {
- sr.category = c;
- c->cb(&sr, c->aux);
- }
- }
- reply = make_openflow_xid(sizeof *reply + sr.output.length,
- OFPT_VENDOR, request->header.xid, &b);
- reply->vendor_id = htonl(NX_VENDOR_ID);
- reply->subtype = htonl(NXT_STATUS_REPLY);
- memcpy(reply + 1, sr.output.string, sr.output.length);
- retval = rconn_send(rc, b, NULL);
- if (retval && retval != EAGAIN) {
- VLOG_WARN("send failed (%s)", strerror(retval));
- }
- ds_destroy(&sr.output);
- return true;
-}
-
-static void
-rconn_status_cb(struct status_reply *sr, void *rconn_)
-{
- struct rconn *rconn = rconn_;
- time_t now = time_now();
-
- status_reply_put(sr, "name=%s", rconn_get_name(rconn));
- status_reply_put(sr, "state=%s", rconn_get_state(rconn));
- status_reply_put(sr, "backoff=%d", rconn_get_backoff(rconn));
- status_reply_put(sr, "is-connected=%s",
- rconn_is_connected(rconn) ? "true" : "false");
- status_reply_put(sr, "sent-msgs=%u", rconn_packets_sent(rconn));
- status_reply_put(sr, "received-msgs=%u", rconn_packets_received(rconn));
- status_reply_put(sr, "attempted-connections=%u",
- rconn_get_attempted_connections(rconn));
- status_reply_put(sr, "successful-connections=%u",
- rconn_get_successful_connections(rconn));
- status_reply_put(sr, "last-connection=%ld",
- (long int) (now - rconn_get_last_connection(rconn)));
- status_reply_put(sr, "time-connected=%lu",
- rconn_get_total_time_connected(rconn));
- status_reply_put(sr, "state-elapsed=%u", rconn_get_state_elapsed(rconn));
-}
-
-static void
-config_status_cb(struct status_reply *sr, void *s_)
-{
- const struct settings *s = s_;
- size_t i;
-
- for (i = 0; i < s->n_listeners; i++) {
- status_reply_put(sr, "management%zu=%s", i, s->listener_names[i]);
- }
- if (s->probe_interval) {
- status_reply_put(sr, "probe-interval=%d", s->probe_interval);
- }
- if (s->max_backoff) {
- status_reply_put(sr, "max-backoff=%d", s->max_backoff);
- }
-}
-
-static void
-switch_status_cb(struct status_reply *sr, void *ss_)
-{
- struct switch_status *ss = ss_;
- time_t now = time_now();
-
- status_reply_put(sr, "now=%ld", (long int) now);
- status_reply_put(sr, "uptime=%ld", (long int) (now - ss->booted));
- status_reply_put(sr, "pid=%ld", (long int) getpid());
-}
-
-static struct hook
-switch_status_hook_create(const struct settings *s, struct switch_status **ssp)
-{
- struct switch_status *ss = xcalloc(1, sizeof *ss);
- ss->s = s;
- ss->booted = time_now();
- switch_status_register_category(ss, "config",
- config_status_cb, (void *) s);
- switch_status_register_category(ss, "switch", switch_status_cb, ss);
- *ssp = ss;
- return make_hook(NULL, switch_status_remote_packet_cb, NULL, NULL, ss);
-}
-
-static void
-switch_status_register_category(struct switch_status *ss,
- const char *category,
- void (*cb)(struct status_reply *,
- void *aux),
- void *aux)
-{
- struct switch_status_category *c;
- assert(ss->n_categories < ARRAY_SIZE(ss->categories));
- c = &ss->categories[ss->n_categories++];
- c->cb = cb;
- c->aux = aux;
- c->name = xstrdup(category);
-}
-
-static void
-status_reply_put(struct status_reply *sr, const char *content, ...)
-{
- size_t old_length = sr->output.length;
- size_t added;
- va_list args;
-
- /* Append the status reply to the output. */
- ds_put_format(&sr->output, "%s.", sr->category->name);
- va_start(args, content);
- ds_put_format_valist(&sr->output, content, args);
- va_end(args);
- if (ds_last(&sr->output) != '\n') {
- ds_put_char(&sr->output, '\n');
- }
-
- /* Drop what we just added if it doesn't match the request. */
- added = sr->output.length - old_length;
- if (added < sr->request.length
- || memcmp(&sr->output.string[old_length],
- sr->request.string, sr->request.length)) {
- ds_truncate(&sr->output, old_length);
- }
-}
-
-\f
-/* Controller discovery. */
-
-struct discovery
-{
- const struct settings *s;
- struct dhclient *dhcp;
- int n_changes;
-};
-
-static void
-discovery_status_cb(struct status_reply *sr, void *d_)
-{
- struct discovery *d = d_;
-
- status_reply_put(sr, "accept-remote=%s", d->s->accept_controller_re);
- status_reply_put(sr, "n-changes=%d", d->n_changes);
- status_reply_put(sr, "state=%s", dhclient_get_state(d->dhcp));
- status_reply_put(sr, "state-elapsed=%u",
- dhclient_get_state_elapsed(d->dhcp));
- if (dhclient_is_bound(d->dhcp)) {
- uint32_t ip = dhclient_get_ip(d->dhcp);
- uint32_t netmask = dhclient_get_netmask(d->dhcp);
- uint32_t router = dhclient_get_router(d->dhcp);
-
- const struct dhcp_msg *cfg = dhclient_get_config(d->dhcp);
- uint32_t dns_server;
- char *domain_name;
- int i;
-
- status_reply_put(sr, "ip="IP_FMT, IP_ARGS(&ip));
- status_reply_put(sr, "netmask="IP_FMT, IP_ARGS(&netmask));
- if (router) {
- status_reply_put(sr, "router="IP_FMT, IP_ARGS(&router));
- }
-
- for (i = 0; dhcp_msg_get_ip(cfg, DHCP_CODE_DNS_SERVER, i, &dns_server);
- i++) {
- status_reply_put(sr, "dns%d="IP_FMT, i, IP_ARGS(&dns_server));
- }
-
- domain_name = dhcp_msg_get_string(cfg, DHCP_CODE_DOMAIN_NAME);
- if (domain_name) {
- status_reply_put(sr, "domain=%s", domain_name);
- free(domain_name);
- }
-
- status_reply_put(sr, "lease-remaining=%u",
- dhclient_get_lease_remaining(d->dhcp));
- }
-}
-
-static struct discovery *
-discovery_init(const struct settings *s, struct switch_status *ss)
-{
- struct netdev *netdev;
- struct discovery *d;
- struct dhclient *dhcp;
- int retval;
-
- /* Bring ofX network device up. */
- retval = netdev_open(s->of_name, NETDEV_ETH_TYPE_NONE, &netdev);
- if (retval) {
- ofp_fatal(retval, "Could not open %s device", s->of_name);
- }
- retval = netdev_turn_flags_on(netdev, NETDEV_UP, true);
- if (retval) {
- ofp_fatal(retval, "Could not bring %s device up", s->of_name);
- }
- netdev_close(netdev);
-
- /* Initialize DHCP client. */
- retval = dhclient_create(s->of_name, modify_dhcp_request,
- validate_dhcp_offer, (void *) s, &dhcp);
- if (retval) {
- ofp_fatal(retval, "Failed to initialize DHCP client");
- }
- dhclient_init(dhcp, 0);
-
- d = xmalloc(sizeof *d);
- d->s = s;
- d->dhcp = dhcp;
- d->n_changes = 0;
-
- switch_status_register_category(ss, "discovery", discovery_status_cb, d);
-
- return d;
-}
-
-static void
-discovery_question_connectivity(struct discovery *d)
-{
- dhclient_force_renew(d->dhcp, 15);
-}
-
-static bool
-discovery_run(struct discovery *d, char **controller_name)
-{
- dhclient_run(d->dhcp);
- if (!dhclient_changed(d->dhcp)) {
- return false;
- }
-
- dhclient_configure_netdev(d->dhcp);
- if (d->s->update_resolv_conf) {
- dhclient_update_resolv_conf(d->dhcp);
- }
-
- if (dhclient_is_bound(d->dhcp)) {
- *controller_name = dhcp_msg_get_string(dhclient_get_config(d->dhcp),
- DHCP_CODE_OFP_CONTROLLER_VCONN);
- VLOG_WARN("%s: discovered controller", *controller_name);
- d->n_changes++;
- } else {
- *controller_name = NULL;
- if (d->n_changes) {
- VLOG_WARN("discovered controller no longer available");
- d->n_changes++;
- }
- }
- return true;
-}
-
-static void
-discovery_wait(struct discovery *d)
-{
- dhclient_wait(d->dhcp);
-}
-
-static void
-modify_dhcp_request(struct dhcp_msg *msg, void *aux)
-{
- dhcp_msg_put_string(msg, DHCP_CODE_VENDOR_CLASS, "OpenFlow");
-}
-
-static bool
-validate_dhcp_offer(const struct dhcp_msg *msg, void *s_)
-{
- const struct settings *s = s_;
- char *vconn_name;
- bool accept;
-
- vconn_name = dhcp_msg_get_string(msg, DHCP_CODE_OFP_CONTROLLER_VCONN);
- if (!vconn_name) {
- VLOG_WARN_RL(&vrl, "rejecting DHCP offer missing controller vconn");
- return false;
- }
- accept = !regexec(&s->accept_controller_regex, vconn_name, 0, NULL, 0);
- if (!accept) {
- VLOG_WARN_RL(&vrl, "rejecting controller vconn that fails to match %s",
- s->accept_controller_re);
- }
- free(vconn_name);
- return accept;
-}
-\f
-/* User interface. */
-
-static void
-parse_options(int argc, char *argv[], struct settings *s)
-{
- enum {
- OPT_ACCEPT_VCONN = UCHAR_MAX + 1,
- OPT_NO_RESOLV_CONF,
- OPT_INACTIVITY_PROBE,
- OPT_MAX_IDLE,
- OPT_MAX_BACKOFF,
- OPT_RATE_LIMIT,
- OPT_BURST_LIMIT
- };
- static struct option long_options[] = {
- {"accept-vconn", required_argument, 0, OPT_ACCEPT_VCONN},
- {"no-resolv-conf", no_argument, 0, OPT_NO_RESOLV_CONF},
- {"fail", required_argument, 0, 'F'},
- {"inactivity-probe", required_argument, 0, OPT_INACTIVITY_PROBE},
- {"max-idle", required_argument, 0, OPT_MAX_IDLE},
- {"max-backoff", required_argument, 0, OPT_MAX_BACKOFF},
- {"listen", required_argument, 0, 'l'},
- {"monitor", required_argument, 0, 'm'},
- {"rate-limit", optional_argument, 0, OPT_RATE_LIMIT},
- {"burst-limit", required_argument, 0, OPT_BURST_LIMIT},
- {"detach", no_argument, 0, 'D'},
- {"force", no_argument, 0, 'f'},
- {"pidfile", optional_argument, 0, 'P'},
- {"verbose", optional_argument, 0, 'v'},
- {"help", no_argument, 0, 'h'},
- {"version", no_argument, 0, 'V'},
- VCONN_SSL_LONG_OPTIONS
- {0, 0, 0, 0},
- };
- char *short_options = long_options_to_short_options(long_options);
- char *accept_re = NULL;
- int retval;
-
- /* Set defaults that we can figure out before parsing options. */
- s->n_listeners = 0;
- s->monitor_name = NULL;
- s->fail_mode = FAIL_OPEN;
- s->max_idle = 15;
- s->probe_interval = 15;
- s->max_backoff = 15;
- s->update_resolv_conf = true;
- s->rate_limit = 0;
- s->burst_limit = 0;
- for (;;) {
- int c;
-
- c = getopt_long(argc, argv, short_options, long_options, NULL);
- if (c == -1) {
- break;
- }
-
- switch (c) {
- case OPT_ACCEPT_VCONN:
- accept_re = optarg[0] == '^' ? optarg : xasprintf("^%s", optarg);
- break;
-
- case OPT_NO_RESOLV_CONF:
- s->update_resolv_conf = false;
- break;
-
- case 'F':
- if (!strcmp(optarg, "open")) {
- s->fail_mode = FAIL_OPEN;
- } else if (!strcmp(optarg, "closed")) {
- s->fail_mode = FAIL_CLOSED;
- } else {
- ofp_fatal(0, "-f or --fail argument must be \"open\" "
- "or \"closed\"");
- }
- break;
-
- case OPT_INACTIVITY_PROBE:
- s->probe_interval = atoi(optarg);
- if (s->probe_interval < 5) {
- ofp_fatal(0, "--inactivity-probe argument must be at least 5");
- }
+ case OPT_BOOTSTRAP_CA_CERT:
+ vconn_ssl_set_ca_cert_file(optarg, true);
break;
-
- case OPT_MAX_IDLE:
- if (!strcmp(optarg, "permanent")) {
- s->max_idle = OFP_FLOW_PERMANENT;
- } else {
- s->max_idle = atoi(optarg);
- if (s->max_idle < 1 || s->max_idle > 65535) {
- ofp_fatal(0, "--max-idle argument must be between 1 and "
- "65535 or the word 'permanent'");
- }
- }
- break;
-
- case OPT_MAX_BACKOFF:
- s->max_backoff = atoi(optarg);
- if (s->max_backoff < 1) {
- ofp_fatal(0, "--max-backoff argument must be at least 1");
- } else if (s->max_backoff > 3600) {
- s->max_backoff = 3600;
- }
- break;
-
- case OPT_RATE_LIMIT:
- if (optarg) {
- s->rate_limit = atoi(optarg);
- if (s->rate_limit < 1) {
- ofp_fatal(0, "--rate-limit argument must be at least 1");
- }
- } else {
- s->rate_limit = 1000;
- }
- break;
-
- case OPT_BURST_LIMIT:
- s->burst_limit = atoi(optarg);
- if (s->burst_limit < 1) {
- ofp_fatal(0, "--burst-limit argument must be at least 1");
- }
- break;
-
- case 'D':
- set_detach();
- break;
-
- case 'P':
- set_pidfile(optarg);
- break;
-
- case 'f':
- ignore_existing_pidfile();
- break;
-
- case 'l':
- if (s->n_listeners >= MAX_MGMT) {
- ofp_fatal(0,
- "-l or --listen may be specified at most %d times",
- MAX_MGMT);
- }
- s->listener_names[s->n_listeners++] = optarg;
- break;
-
- case 'm':
- if (s->monitor_name) {
- ofp_fatal(0, "-m or --monitor may only be specified once");
- }
- s->monitor_name = optarg;
- break;
-
- case 'h':
- usage();
-
- case 'V':
- printf("%s "VERSION" compiled "__DATE__" "__TIME__"\n", argv[0]);
- exit(EXIT_SUCCESS);
-
- case 'v':
- vlog_set_verbosity(optarg);
- break;
-
- VCONN_SSL_OPTION_HANDLERS
+#endif
case '?':
exit(EXIT_FAILURE);
}
/* Local and remote vconns. */
- s->nl_name = argv[0];
- if (strncmp(s->nl_name, "nl:", 3)
- || strlen(s->nl_name) < 4
- || s->nl_name[strspn(s->nl_name + 3, "0123456789") + 3]) {
- ofp_fatal(0, "%s: argument is not of the form \"nl:DP_IDX\"",
- s->nl_name);
- }
- s->of_name = xasprintf("of%s", s->nl_name + 3);
+ s->dp_name = argv[0];
s->controller_name = argc > 1 ? xstrdup(argv[1]) : NULL;
/* Set accept_controller_regex. */
/* Mode of operation. */
s->discovery = s->controller_name == NULL;
- if (s->discovery) {
- s->in_band = true;
- } else {
- enum netdev_flags flags;
- struct netdev *netdev;
-
- retval = netdev_open(s->of_name, NETDEV_ETH_TYPE_NONE, &netdev);
- if (retval) {
- ofp_fatal(retval, "Could not open %s device", s->of_name);
- }
-
- retval = netdev_get_flags(netdev, &flags);
- if (retval) {
- ofp_fatal(retval, "Could not get flags for %s device", s->of_name);
- }
-
- s->in_band = (flags & NETDEV_UP) != 0;
- if (s->in_band && netdev_get_in6(netdev, NULL)) {
- VLOG_WARN("Ignoring IPv6 address on %s device: IPv6 not supported",
- s->of_name);
- }
-
- netdev_close(netdev);
+ if (s->discovery && !s->in_band) {
+ ofp_fatal(0, "Cannot perform discovery with out-of-band control");
}
/* Rate limiting. */
"CONTROLLER is an active OpenFlow connection method; if it is\n"
"omitted, then secchan performs controller discovery.\n",
program_name, program_name);
- vconn_usage(true, true);
+ vconn_usage(true, true, true);
printf("\nController discovery options:\n"
" --accept-vconn=REGEX accept matching discovered controllers\n"
" --no-resolv-conf do not update /etc/resolv.conf\n"
" (a passive OpenFlow connection method)\n"
" -m, --monitor=METHOD copy traffic to/from kernel to METHOD\n"
" (a passive OpenFlow connection method)\n"
+ " --out-of-band controller connection is out-of-band\n"
+ " --stp enable 802.1D Spanning Tree Protocol\n"
+ " --no-stp disable 802.1D Spanning Tree Protocol\n"
"\nRate-limiting of \"packet-in\" messages to the controller:\n"
" --rate-limit[=PACKETS] max rate, in packets/s (default: 1000)\n"
" --burst-limit=BURST limit on packet credit for idle time\n"
- "\nOther options:\n"
- " -D, --detach run in background as daemon\n"
- " -P, --pidfile[=FILE] create pidfile (default: %s/secchan.pid)\n"
- " -f, --force with -P, start even if already running\n"
- " -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
- " -v, --verbose set maximum verbosity level\n"
+ "\nRemote command execution options:\n"
+ " --command-acl=[!]GLOB[,[!]GLOB...] set allowed/denied commands\n"
+ " --command-dir=DIR set command dir (default: %s/commands)\n",
+ ofp_pkgdatadir);
+ daemon_usage();
+ vlog_usage();
+ printf("\nOther options:\n"
" -h, --help display this help message\n"
- " -V, --version display version information\n",
- RUNDIR);
+ " -V, --version display version information\n");
exit(EXIT_SUCCESS);
}
git://git.onelab.eu / sliver-openvswitch.git / blobdiff