void (*wait_cb)(void *),
void *aux);
-static struct discovery *discovery_init(const struct settings *);
+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 *);
+static struct hook in_band_hook_create(const struct settings *,
+ struct switch_status *,
+ 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);
struct list relays = LIST_INITIALIZER(&relays);
- struct hook hooks[4];
- size_t n_hooks;
+ struct hook hooks[8];
+ size_t n_hooks = 0;
struct rconn *local_rconn, *remote_rconn;
struct vconn *listen_vconn;
struct relay *controller_relay;
struct discovery *discovery;
+ struct switch_status *switch_status;
int retval;
set_program_name(argv[0]);
listen_vconn = NULL;
}
+ /* Initialize switch status hook. */
+ hooks[n_hooks++] = switch_status_hook_create(&s, &switch_status);
+
/* Start controller discovery. */
- discovery = s.discovery ? discovery_init(&s) : NULL;
+ discovery = s.discovery ? discovery_init(&s, switch_status) : NULL;
/* Start listening for vlogconf requests. */
retval = vlog_server_listen(NULL, NULL);
/* Connect to datapath. */
local_rconn = rconn_create(0, s.max_backoff);
rconn_connect(local_rconn, s.nl_name);
+ switch_status_register_category(switch_status, "local",
+ rconn_status_cb, local_rconn);
/* Connect to controller. */
remote_rconn = rconn_create(s.probe_interval, s.max_backoff);
fatal(0, "No support for %s vconn", s.controller_name);
}
}
+ switch_status_register_category(switch_status, "remote",
+ rconn_status_cb, remote_rconn);
/* Start relaying. */
controller_relay = relay_create(local_rconn, remote_rconn, false);
list_push_back(&relays, &controller_relay->node);
/* Set up hooks. */
- n_hooks = 0;
if (s.in_band) {
- hooks[n_hooks++] = in_band_hook_create(&s);
+ hooks[n_hooks++] = in_band_hook_create(&s, switch_status,
+ remote_rconn);
}
if (s.fail_mode == FAIL_OPEN) {
- hooks[n_hooks++] = fail_open_hook_create(&s,
+ hooks[n_hooks++] = fail_open_hook_create(&s, switch_status,
local_rconn, remote_rconn);
}
if (s.rate_limit) {
- hooks[n_hooks++] = rate_limit_hook_create(&s,
+ hooks[n_hooks++] = rate_limit_hook_create(&s, switch_status,
local_rconn, remote_rconn);
}
assert(n_hooks <= ARRAY_SIZE(hooks));
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 const uint8_t *
-get_controller_mac(struct netdev *netdev, struct rconn *controller)
+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];
time_t now = time_now();
- ip = rconn_get_ip(controller);
+ 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(netdev, ip, mac);
+ 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));
}
static bool
-is_controller_mac(const uint8_t mac[ETH_ADDR_LEN],
- const uint8_t *controller_mac)
+is_controller_mac(const uint8_t dl_addr[ETH_ADDR_LEN],
+ struct in_band_data *in_band)
{
- return controller_mac && eth_addr_equals(mac, controller_mac);
+ const uint8_t *mac = get_controller_mac(in_band);
+ return mac && eth_addr_equals(mac, dl_addr);
}
static bool
if (oh->type != OFPT_PACKET_IN) {
return false;
}
- if (msg->size < offsetof (struct ofp_packet_in, data)) {
+ if (msg->size < offsetof(struct ofp_packet_in, data)) {
VLOG_WARN("packet too short (%zu bytes) for packet_in", msg->size);
return false;
}
flow_extract(&pkt, in_port, &flow);
/* Deal with local stuff. */
- controller_mac = get_controller_mac(in_band->of_device,
- r->halves[HALF_REMOTE].rconn);
+ controller_mac = get_controller_mac(in_band);
if (in_port == OFPP_LOCAL) {
/* Sent by secure channel. */
out_port = mac_learning_lookup(in_band->ml, flow.dl_dst);
}
} else if (flow.dl_type == htons(ETH_TYPE_ARP)
&& eth_addr_is_broadcast(flow.dl_dst)
- && is_controller_mac(flow.dl_src, controller_mac)) {
+ && is_controller_mac(flow.dl_src, in_band)) {
/* ARP sent by controller. */
out_port = OFPP_FLOOD;
- } else if (is_controller_mac(flow.dl_dst, controller_mac)
+ } else if (is_controller_mac(flow.dl_dst, in_band)
&& in_port == mac_learning_lookup(in_band->ml,
controller_mac)) {
/* Drop controller traffic that arrives on the controller port. */
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 struct hook
-in_band_hook_create(const struct settings *s)
+in_band_hook_create(const struct settings *s, struct switch_status *ss,
+ struct rconn *remote)
{
struct in_band_data *in_band;
int retval;
}
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_packet_cb, NULL, NULL, in_band);
}
\f
}
}
+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 rconn *local_rconn,
- struct rconn *remote_rconn)
+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;
+ switch_status_register_category(ss, "fail-open",
+ fail_open_status_cb, fail_open);
return make_hook(fail_open_packet_cb, fail_open_periodic_cb, NULL,
fail_open);
}
/* 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'. */
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. */
}
queue_push_tail(&rl->queues[port], buffer_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_)
{
* no point in trying to transmit faster than the TCP connection can
* handle. */
struct buffer *b = dequeue_packet(rl);
- rconn_send_with_limit(rl->remote_rconn, b, &rl->n_txq, 10);
+ if (rconn_send_with_limit(rl->remote_rconn, b, &rl->n_txq, 10)) {
+ rl->n_tx_dropped++;
+ }
}
}
}
static struct hook
-rate_limit_hook_create(const struct settings *s,
- struct rconn *local,
- struct rconn *remote)
+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->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_packet_cb, 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_packet_cb(struct relay *r, int half, void *ss_)
+{
+ struct switch_status *ss = ss_;
+ struct rconn *rc = r->halves[HALF_REMOTE].rconn;
+ struct buffer *msg = r->halves[HALF_REMOTE].rxbuf;
+ struct switch_status_category *c;
+ struct ofp_stats_request *osr;
+ struct ofp_stats_reply *reply;
+ struct status_reply sr;
+ struct ofp_header *oh;
+ struct buffer *b;
+ int retval;
+
+ if (half == HALF_LOCAL) {
+ return false;
+ }
+
+ oh = msg->data;
+ if (oh->type != OFPT_STATS_REQUEST) {
+ return false;
+ }
+ if (msg->size < sizeof(struct ofp_stats_request)) {
+ VLOG_WARN("packet too short (%zu bytes) for stats_request", msg->size);
+ return false;
+ }
+
+ osr = msg->data;
+ if (osr->type != htons(OFPST_SWITCH)) {
+ return false;
+ }
+
+ sr.request.string = (void *) (osr + 1);
+ sr.request.length = msg->size - sizeof *osr;
+ 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((offsetof(struct ofp_stats_reply, body)
+ + sr.output.length),
+ OFPT_STATS_REPLY, osr->header.xid, &b);
+ reply->type = htons(OFPST_SWITCH);
+ reply->flags = 0;
+ memcpy(reply->body, 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, "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));
+}
+
+static void
+config_status_cb(struct status_reply *sr, void *s_)
+{
+ const struct settings *s = s_;
+
+ if (s->listen_vconn_name) {
+ status_reply_put(sr, "management=%s", s->listen_vconn_name);
+ }
+ 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(switch_status_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. */
{
const struct settings *s;
struct dhclient *dhcp;
- bool ever_successful;
+ int n_changes;
};
+static void
+discovery_status_cb(struct status_reply *sr, void *d_)
+{
+ struct discovery *d = d_;
+
+ status_reply_put(sr, "discovery.accept-remote=%s",
+ d->s->accept_controller_re);
+ status_reply_put(sr, "discovery.n-changes=%d", d->n_changes);
+ status_reply_put(sr, "discovery.state=%s", dhclient_get_state(d->dhcp));
+ status_reply_put(sr, "discovery.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, "discovery.ip="IP_FMT, IP_ARGS(&ip));
+ status_reply_put(sr, "discovery.netmask="IP_FMT, IP_ARGS(&netmask));
+ if (router) {
+ status_reply_put(sr, "discovery.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, "discovery.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, "discovery.domain=%s", domain_name);
+ free(domain_name);
+ }
+
+ status_reply_put(sr, "discovery.lease-remaining=%u",
+ dhclient_get_lease_remaining(d->dhcp));
+ }
+}
+
static struct discovery *
-discovery_init(const struct settings *s)
+discovery_init(const struct settings *s, struct switch_status *ss)
{
struct netdev *netdev;
struct discovery *d;
d = xmalloc(sizeof *d);
d->s = s;
d->dhcp = dhcp;
- d->ever_successful = false;
+ d->n_changes = 0;
+
+ switch_status_register_category(ss, "discovery", discovery_status_cb, d);
+
return d;
}
*controller_name = dhcp_msg_get_string(dhclient_get_config(d->dhcp),
DHCP_CODE_OFP_CONTROLLER_VCONN);
VLOG_WARN("%s: discovered controller", *controller_name);
- d->ever_successful = true;
- } else if (controller_name) {
+ d->n_changes++;
+ } else {
*controller_name = NULL;
- if (d->ever_successful) {
+ if (d->n_changes) {
VLOG_WARN("discovered controller no longer available");
+ d->n_changes++;
}
}
return true;
projects / openvswitch / commitdiff