#include <time.h>
#include <unistd.h>
-#include "buffer.h"
#include "command-line.h"
#include "compiler.h"
#include "daemon.h"
-#include "dhcp.h"
#include "dhcp-client.h"
+#include "dhcp.h"
#include "dynamic-string.h"
#include "fault.h"
#include "flow.h"
#include "list.h"
#include "mac-learning.h"
#include "netdev.h"
+#include "nicira-ext.h"
+#include "ofpbuf.h"
#include "openflow.h"
#include "packets.h"
#include "poll-loop.h"
+#include "port-array.h"
#include "rconn.h"
+#include "stp.h"
#include "timeval.h"
#include "util.h"
#include "vconn-ssl.h"
#include "vconn.h"
#include "vlog-socket.h"
+#include "xtoxll.h"
#include "vlog.h"
#define THIS_MODULE VLM_secchan
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 *dp_name; /* Local datapath. */
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? */
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? */
+
+ /* Spanning tree protocol. */
+ bool enable_stp;
};
struct half {
struct rconn *rconn;
- struct buffer *rxbuf;
+ struct ofpbuf *rxbuf;
int n_txq; /* No. of packets queued for tx on 'rconn'. */
};
};
struct hook {
- bool (*packet_cb)(struct relay *, int half, void *aux);
+ bool (*packet_cb[2])(struct relay *, void *aux);
void (*periodic_cb)(void *aux);
void (*wait_cb)(void *aux);
void *aux;
static void parse_options(int argc, char *argv[], struct settings *);
static void usage(void) NO_RETURN;
+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_accept(const struct settings *, struct vconn *);
+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_wait(struct relay *);
static void relay_destroy(struct relay *);
-static struct hook make_hook(bool (*packet_cb)(struct relay *, int, void *),
+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 void rconn_status_cb(struct status_reply *, void *rconn_);
+struct port_watcher;
static struct discovery *discovery_init(const struct settings *,
+ struct port_watcher *,
struct switch_status *);
static void discovery_question_connectivity(struct discovery *);
static bool discovery_run(struct discovery *, char **controller_name);
static struct hook in_band_hook_create(const struct settings *,
struct switch_status *,
+ struct port_watcher *,
struct rconn *remote);
+
+static struct hook port_watcher_create(struct rconn *local,
+ struct rconn *remote,
+ struct port_watcher **);
+static uint32_t port_watcher_get_config(const struct port_watcher *,
+ uint16_t port_no);
+static const char *port_watcher_get_name(const struct port_watcher *,
+ uint16_t port_no) UNUSED;
+static const uint8_t *port_watcher_get_hwaddr(const struct port_watcher *,
+ uint16_t port_no);
+static void port_watcher_set_flags(struct port_watcher *, uint16_t port_no,
+ uint32_t config, uint32_t c_mask,
+ uint32_t state, uint32_t s_mask);
+
+#ifdef SUPPORT_SNAT
+static struct hook snat_hook_create(struct port_watcher *pw);
+#endif
+
+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 hook hooks[8];
size_t n_hooks = 0;
- struct vconn *listeners[MAX_MGMT];
+ struct pvconn *monitor;
+
+ struct pvconn *listeners[MAX_MGMT];
size_t n_listeners;
struct rconn *local_rconn, *remote_rconn;
struct relay *controller_relay;
struct discovery *discovery;
struct switch_status *switch_status;
+ struct port_watcher *pw;
int i;
int retval;
parse_options(argc, argv, &s);
signal(SIGPIPE, SIG_IGN);
- /* Start listening for management connections. */
+ /* Start listening for management and monitoring connections. */
n_listeners = 0;
for (i = 0; i < s.n_listeners; i++) {
- const char *name = s.listener_names[i];
- struct vconn *listener;
- retval = vconn_open(name, &listener);
- if (retval && retval != EAGAIN) {
- fatal(retval, "opening %s", name);
- }
- if (!vconn_is_passive(listener)) {
- fatal(0, "%s is not a passive vconn", name);
- }
- listeners[n_listeners++] = listener;
+ listeners[n_listeners++] = open_passive_vconn(s.listener_names[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);
- /* Start controller discovery. */
- discovery = s.discovery ? discovery_init(&s, switch_status) : NULL;
-
/* Start listening for vlogconf requests. */
retval = vlog_server_listen(NULL, NULL);
if (retval) {
- fatal(retval, "Could not listen for vlog connections");
+ ofp_fatal(retval, "Could not listen for vlog connections");
}
die_if_already_running();
/* Connect to datapath. */
local_rconn = rconn_create(0, s.max_backoff);
- rconn_connect(local_rconn, s.nl_name);
+ rconn_connect(local_rconn, s.dp_name);
switch_status_register_category(switch_status, "local",
rconn_status_cb, local_rconn);
if (s.controller_name) {
retval = rconn_connect(remote_rconn, s.controller_name);
if (retval == EAFNOSUPPORT) {
- fatal(0, "No support for %s vconn", s.controller_name);
+ ofp_fatal(0, "No support for %s vconn", s.controller_name);
}
}
switch_status_register_category(switch_status, "remote",
list_push_back(&relays, &controller_relay->node);
/* Set up hooks. */
+ hooks[n_hooks++] = port_watcher_create(local_rconn, remote_rconn, &pw);
+ discovery = s.discovery ? discovery_init(&s, pw, switch_status) : NULL;
+#ifdef SUPPORT_SNAT
+ hooks[n_hooks++] = snat_hook_create(pw);
+#endif
+ if (s.enable_stp) {
+ hooks[n_hooks++] = stp_hook_create(&s, pw, local_rconn, remote_rconn);
+ }
if (s.in_band) {
- hooks[n_hooks++] = in_band_hook_create(&s, switch_status,
+ hooks[n_hooks++] = in_band_hook_create(&s, switch_status, pw,
remote_rconn);
}
if (s.fail_mode == FAIL_OPEN) {
list_push_back(&relays, &r->node);
}
}
+ if (monitor) {
+ struct vconn *new = accept_vconn(monitor);
+ if (new) {
+ 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);
relay_wait(r);
}
for (i = 0; i < n_listeners; i++) {
- vconn_accept_wait(listeners[i]);
+ pvconn_wait(listeners[i]);
+ }
+ if (monitor) {
+ pvconn_wait(monitor);
}
for (i = 0; i < n_hooks; i++) {
if (hooks[i].wait_cb) {
return 0;
}
+static struct pvconn *
+open_passive_vconn(const char *name)
+{
+ struct pvconn *pvconn;
+ int retval;
+
+ retval = pvconn_open(name, &pvconn);
+ if (retval && retval != EAGAIN) {
+ ofp_fatal(retval, "opening %s", name);
+ }
+ return pvconn;
+}
+
+static struct vconn *
+accept_vconn(struct pvconn *pvconn)
+{
+ struct vconn *new;
+ int retval;
+
+ retval = pvconn_accept(pvconn, OFP_VERSION, &new);
+ if (retval && retval != EAGAIN) {
+ VLOG_WARN_RL(&vrl, "accept failed (%s)", strerror(retval));
+ }
+ return new;
+}
+
static struct hook
-make_hook(bool (*packet_cb)(struct relay *, int half, void *aux),
+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)
{
struct hook h;
- h.packet_cb = packet_cb;
+ 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;
}
+
+static struct ofp_packet_in *
+get_ofp_packet_in(struct relay *r)
+{
+ struct ofpbuf *msg = r->halves[HALF_LOCAL].rxbuf;
+ struct ofp_header *oh = msg->data;
+ if (oh->type == OFPT_PACKET_IN) {
+ if (msg->size >= offsetof (struct ofp_packet_in, data)) {
+ return msg->data;
+ } else {
+ VLOG_WARN("packet too short (%zu bytes) for packet_in",
+ msg->size);
+ }
+ }
+ return NULL;
+}
+
+static bool
+get_ofp_packet_eth_header(struct relay *r, struct ofp_packet_in **opip,
+ struct eth_header **ethp)
+{
+ const int min_len = offsetof(struct ofp_packet_in, data) + ETH_HEADER_LEN;
+ struct ofp_packet_in *opi = get_ofp_packet_in(r);
+ if (opi && ntohs(opi->header.length) >= min_len) {
+ *opip = opi;
+ *ethp = (void *) opi->data;
+ return true;
+ }
+ return false;
+}
+
\f
/* OpenFlow message relaying. */
static struct relay *
-relay_accept(const struct settings *s, struct vconn *listen_vconn)
+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 nl_index;
int retval;
- retval = vconn_accept(listen_vconn, &new_remote);
- if (retval) {
- if (retval != EAGAIN) {
- VLOG_WARN_RL(&vrl, "accept failed (%s)", strerror(retval));
- }
+ new_remote = accept_vconn(pvconn);
+ if (!new_remote) {
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, &new_local);
+ if (sscanf(s->dp_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. That's what we want here; management connections should
+ * not receive those messages, at least by default. */
+ vconn_name = 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(&vrl, "new management connection will receive "
+ "asynchronous messages");
+ vconn_name = xstrdup(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));
+ 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);
if (!this->rxbuf) {
this->rxbuf = rconn_recv(this->rconn);
- if (this->rxbuf) {
+ 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(r, i, h->aux)) {
- buffer_delete(this->rxbuf);
+ if (h->packet_cb[i] && h->packet_cb[i](r, h->aux)) {
+ ofpbuf_delete(this->rxbuf);
this->rxbuf = NULL;
progress = true;
break;
if (!retval) {
progress = true;
} else {
- buffer_delete(this->rxbuf);
+ ofpbuf_delete(this->rxbuf);
}
this->rxbuf = NULL;
}
for (i = 0; i < 2; i++) {
struct half *this = &r->halves[i];
rconn_destroy(this->rconn);
- buffer_delete(this->rxbuf);
+ ofpbuf_delete(this->rxbuf);
}
free(r);
}
\f
+/* Port status watcher. */
+
+typedef void port_changed_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_changed_cb_func *port_changed;
+ void *aux;
+};
+
+typedef void local_port_changed_cb_func(const struct ofp_phy_port *new,
+ void *aux);
+
+struct port_watcher_local_cb {
+ local_port_changed_cb_func *local_port_changed;
+ void *aux;
+};
+
+struct port_watcher {
+ struct rconn *local_rconn;
+ struct rconn *remote_rconn;
+ struct port_array ports;
+ time_t last_feature_request;
+ bool got_feature_reply;
+ uint64_t datapath_id;
+ int n_txq;
+ struct port_watcher_cb cbs[2];
+ int n_cbs;
+ struct port_watcher_local_cb local_cbs[4];
+ int n_local_cbs;
+ char local_port_name[OFP_MAX_PORT_NAME_LEN + 1];
+};
+
+/* 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 == 48); /* 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->config != b->config)
+ + (a->state != b->state)
+ + (a->curr != b->curr)
+ + (a->advertised != b->advertised)
+ + (a->supported != b->supported)
+ + (a->peer != b->peer));
+}
+
+static void
+sanitize_opp(struct ofp_phy_port *opp)
+{
+ 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';
+}
+
+static void
+call_port_changed_callbacks(struct port_watcher *pw, int port_no,
+ const struct ofp_phy_port *old,
+ const struct ofp_phy_port *new)
+{
+ int i;
+ for (i = 0; i < pw->n_cbs; i++) {
+ port_changed_cb_func *port_changed = pw->cbs[i].port_changed;
+ (port_changed)(port_no, old, new, pw->cbs[i].aux);
+ }
+}
+
+static void
+get_port_name(const struct ofp_phy_port *port, char *name, size_t name_size)
+{
+ char *p;
+
+ memcpy(name, port->name, MIN(name_size, sizeof port->name));
+ name[name_size - 1] = '\0';
+ for (p = name; *p != '\0'; p++) {
+ if (*p < 32 || *p > 126) {
+ *p = '.';
+ }
+ }
+}
+
+static struct ofp_phy_port *
+lookup_port(const struct port_watcher *pw, uint16_t port_no)
+{
+ return port_array_get(&pw->ports, port_no);
+}
+
+static void
+call_local_port_changed_callbacks(struct port_watcher *pw)
+{
+ char name[OFP_MAX_PORT_NAME_LEN + 1];
+ const struct ofp_phy_port *port;
+ int i;
+
+ /* Pass the local port to the callbacks, if it exists.
+ Pass a null pointer if there is no local port. */
+ port = lookup_port(pw, OFPP_LOCAL);
+
+ /* Log the name of the local port. */
+ if (port) {
+ get_port_name(port, name, sizeof name);
+ } else {
+ name[0] = '\0';
+ }
+ if (strcmp(pw->local_port_name, name)) {
+ if (name[0]) {
+ VLOG_WARN("Identified data path local port as \"%s\".", name);
+ } else {
+ VLOG_WARN("Data path has no local port.");
+ }
+ strcpy(pw->local_port_name, name);
+ }
+
+ /* Invoke callbacks. */
+ for (i = 0; i < pw->n_local_cbs; i++) {
+ local_port_changed_cb_func *cb = pw->local_cbs[i].local_port_changed;
+ (cb)(port, pw->local_cbs[i].aux);
+ }
+}
+
+static void
+update_phy_port(struct port_watcher *pw, struct ofp_phy_port *opp,
+ uint8_t reason)
+{
+ struct ofp_phy_port *old;
+ uint16_t port_no;
+
+ port_no = ntohs(opp->port_no);
+ old = lookup_port(pw, port_no);
+
+ if (reason == OFPPR_DELETE && old) {
+ call_port_changed_callbacks(pw, port_no, old, NULL);
+ free(old);
+ port_array_set(&pw->ports, port_no, NULL);
+ } else if (reason == OFPPR_MODIFY || reason == OFPPR_ADD) {
+ if (old) {
+ uint32_t s_mask = htonl(OFPPS_STP_MASK);
+ opp->state = (opp->state & ~s_mask) | (old->state & s_mask);
+ }
+ if (!old || opp_differs(opp, old)) {
+ struct ofp_phy_port new = *opp;
+ sanitize_opp(&new);
+ call_port_changed_callbacks(pw, port_no, old, &new);
+ if (old) {
+ *old = new;
+ } else {
+ port_array_set(&pw->ports, port_no, xmemdup(&new, sizeof new));
+ }
+ }
+ }
+}
+
+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;
+
+ if (oh->type == OFPT_FEATURES_REPLY
+ && msg->size >= offsetof(struct ofp_switch_features, ports)) {
+ struct ofp_switch_features *osf = msg->data;
+ bool seen[PORT_ARRAY_SIZE];
+ struct ofp_phy_port *p;
+ unsigned int port_no;
+ size_t n_ports;
+ size_t i;
+
+ pw->got_feature_reply = true;
+ if (pw->datapath_id != osf->datapath_id) {
+ pw->datapath_id = osf->datapath_id;
+ VLOG_WARN("Datapath id is %012"PRIx64, ntohll(pw->datapath_id));
+ }
+
+ /* Update each port included in the message. */
+ memset(seen, false, sizeof seen);
+ n_ports = ((msg->size - offsetof(struct ofp_switch_features, ports))
+ / sizeof *osf->ports);
+ for (i = 0; i < n_ports; i++) {
+ struct ofp_phy_port *opp = &osf->ports[i];
+ update_phy_port(pw, opp, OFPPR_MODIFY);
+ seen[ntohs(opp->port_no)] = true;
+ }
+
+ /* Delete all the ports not included in the message. */
+ for (p = port_array_first(&pw->ports, &port_no); p;
+ p = port_array_next(&pw->ports, &port_no)) {
+ if (!seen[port_no]) {
+ update_phy_port(pw, p, OFPPR_DELETE);
+ }
+ }
+
+ call_local_port_changed_callbacks(pw);
+ } 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);
+ if (ops->desc.port_no == htons(OFPP_LOCAL)) {
+ call_local_port_changed_callbacks(pw);
+ }
+ }
+ return false;
+}
+
+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;
+
+ 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->port_no);
+ struct ofp_phy_port *pw_opp = lookup_port(pw, port_no);
+ if (pw_opp->port_no != htons(OFPP_NONE)) {
+ struct ofp_phy_port old = *pw_opp;
+ pw_opp->config = ((pw_opp->config & ~opm->mask)
+ | (opm->config & opm->mask));
+ call_port_changed_callbacks(pw, port_no, &old, pw_opp);
+ if (pw_opp->port_no == htons(OFPP_LOCAL)) {
+ call_local_port_changed_callbacks(pw);
+ }
+ }
+ }
+ return false;
+}
+
+static void
+port_watcher_periodic_cb(void *pw_)
+{
+ struct port_watcher *pw = pw_;
+
+ if (!pw->got_feature_reply
+ && time_now() >= pw->last_feature_request + 5
+ && rconn_is_connected(pw->local_rconn)) {
+ 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();
+ }
+}
+
+static void
+port_watcher_wait_cb(void *pw_)
+{
+ struct port_watcher *pw = pw_;
+ if (!pw->got_feature_reply && rconn_is_connected(pw->local_rconn)) {
+ if (pw->last_feature_request != TIME_MIN) {
+ poll_timer_wait(pw->last_feature_request + 5 - time_now());
+ } else {
+ poll_immediate_wake();
+ }
+ }
+}
+
+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)");
+ }
+ }
+}
+
+static void
+put_features(struct ds *ds, const char *name, uint32_t features)
+{
+ 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, name);
+ 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");
+ }
+ if (features & OFPPF_AUTONEG) {
+ ds_put_cstr(ds, " AUTO_NEG");
+ }
+ if (features & OFPPF_PAUSE) {
+ ds_put_cstr(ds, " PAUSE");
+ }
+ if (features & OFPPF_PAUSE_ASYM) {
+ ds_put_cstr(ds, " PAUSE_ASYM");
+ }
+ }
+}
+
+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()) {
+ if (old && new && (opp_differs(old, new)
+ == ((old->config != new->config)
+ + (old->state != new->state))))
+ {
+ /* Don't care if only state or config changed. */
+ } else if (!new) {
+ if (old) {
+ VLOG_DBG("Port %d deleted", port_no);
+ }
+ } else {
+ struct ds ds = DS_EMPTY_INITIALIZER;
+ uint32_t curr = ntohl(new->curr);
+ uint32_t supported = ntohl(new->supported);
+ ds_put_format(&ds, "\"%s\", "ETH_ADDR_FMT, new->name,
+ ETH_ADDR_ARGS(new->hw_addr));
+ if (curr) {
+ put_features(&ds, ", current", curr);
+ }
+ if (supported) {
+ put_features(&ds, ", supports", supported);
+ }
+ VLOG_DBG("Port %d %s: %s",
+ port_no, old ? "changed" : "added", ds_cstr(&ds));
+ ds_destroy(&ds);
+ }
+ }
+}
+
+static void
+port_watcher_register_callback(struct port_watcher *pw,
+ port_changed_cb_func *port_changed,
+ void *aux)
+{
+ assert(pw->n_cbs < ARRAY_SIZE(pw->cbs));
+ pw->cbs[pw->n_cbs].port_changed = port_changed;
+ pw->cbs[pw->n_cbs].aux = aux;
+ pw->n_cbs++;
+}
+
+static void
+port_watcher_register_local_port_callback(struct port_watcher *pw,
+ local_port_changed_cb_func *cb,
+ void *aux)
+{
+ assert(pw->n_local_cbs < ARRAY_SIZE(pw->local_cbs));
+ pw->local_cbs[pw->n_local_cbs].local_port_changed = cb;
+ pw->local_cbs[pw->n_local_cbs].aux = aux;
+ pw->n_local_cbs++;
+}
+
+static uint32_t
+port_watcher_get_config(const struct port_watcher *pw, uint16_t port_no)
+{
+ struct ofp_phy_port *p = lookup_port(pw, port_no);
+ return p ? ntohl(p->config) : 0;
+}
+
+static const char *
+port_watcher_get_name(const struct port_watcher *pw, uint16_t port_no)
+{
+ struct ofp_phy_port *p = lookup_port(pw, port_no);
+ return p ? (const char *) p->name : NULL;
+}
+
+static const uint8_t *
+port_watcher_get_hwaddr(const struct port_watcher *pw, uint16_t port_no)
+{
+ struct ofp_phy_port *p = lookup_port(pw, port_no);
+ return p ? p->hw_addr : NULL;
+}
+
+static void
+port_watcher_set_flags(struct port_watcher *pw, uint16_t port_no,
+ uint32_t config, uint32_t c_mask,
+ uint32_t state, uint32_t s_mask)
+{
+ struct ofp_phy_port old;
+ struct ofp_phy_port *p;
+ struct ofp_port_mod *opm;
+ struct ofp_port_status *ops;
+ struct ofpbuf *b;
+
+ p = lookup_port(pw, port_no);
+ if (!p) {
+ return;
+ }
+
+ if (!((ntohl(p->state) ^ state) & s_mask)
+ && (!((ntohl(p->config) ^ config) & c_mask))) {
+ return;
+ }
+ old = *p;
+
+ /* Update our idea of the flags. */
+ p->config = htonl((ntohl(p->config) & ~c_mask) | (config & c_mask));
+ p->state = htonl((ntohl(p->state) & ~s_mask) | (state & s_mask));
+ call_port_changed_callbacks(pw, port_no, &old, p);
+
+ /* Change the flags in the datapath. */
+ opm = make_openflow(sizeof *opm, OFPT_PORT_MOD, &b);
+ opm->port_no = p->port_no;
+ memcpy(opm->hw_addr, p->hw_addr, OFP_ETH_ALEN);
+ opm->config = p->config;
+ opm->mask = htonl(c_mask);
+ opm->advertise = htonl(0);
+ 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_MODIFY;
+ ops->desc = *p;
+ rconn_send(pw->remote_rconn, b, NULL);
+}
+
+static bool
+port_watcher_is_ready(const struct port_watcher *pw)
+{
+ return pw->got_feature_reply;
+}
+
+static struct hook
+port_watcher_create(struct rconn *local_rconn, struct rconn *remote_rconn,
+ struct port_watcher **pwp)
+{
+ struct port_watcher *pw;
+
+ pw = *pwp = xcalloc(1, sizeof *pw);
+ pw->local_rconn = local_rconn;
+ pw->remote_rconn = remote_rconn;
+ pw->last_feature_request = TIME_MIN;
+ port_array_init(&pw->ports);
+ pw->local_port_name[0] = '\0';
+ 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,
+ port_watcher_wait_cb, pw);
+}
+\f
+#ifdef SUPPORT_SNAT
+struct snat_port_conf {
+ struct list node;
+ struct nx_snat_config config;
+};
+
+struct snat_data {
+ struct port_watcher *pw;
+ struct list port_list;
+};
+
+
+/* Source-NAT configuration monitor. */
+#define SNAT_CMD_LEN 1024
+
+/* Commands to configure iptables. There is no programmatic interface
+ * to iptables from the kernel, so we're stuck making command-line calls
+ * in user-space. */
+#define SNAT_FLUSH_ALL_CMD "/sbin/iptables -t nat -F"
+#define SNAT_FLUSH_CHAIN_CMD "/sbin/iptables -t nat -F of-snat-%s"
+
+#define SNAT_ADD_CHAIN_CMD "/sbin/iptables -t nat -N of-snat-%s"
+#define SNAT_CONF_CHAIN_CMD "/sbin/iptables -t nat -A POSTROUTING -o %s -j of-snat-%s"
+
+#define SNAT_ADD_IP_CMD "/sbin/iptables -t nat -A of-snat-%s -j SNAT --to %s-%s"
+#define SNAT_ADD_TCP_CMD "/sbin/iptables -t nat -A of-snat-%s -j SNAT -p TCP --to %s-%s:%d-%d"
+#define SNAT_ADD_UDP_CMD "/sbin/iptables -t nat -A of-snat-%s -j SNAT -p UDP --to %s-%s:%d-%d"
+
+#define SNAT_UNSET_CHAIN_CMD "/sbin/iptables -t nat -D POSTROUTING -o %s -j of-snat-%s"
+#define SNAT_DEL_CHAIN_CMD "/sbin/iptables -t nat -X of-snat-%s"
+
+static void
+snat_add_rules(const struct nx_snat_config *sc, const uint8_t *dev_name)
+{
+ char command[SNAT_CMD_LEN];
+ char ip_str_start[16];
+ char ip_str_end[16];
+
+
+ snprintf(ip_str_start, sizeof ip_str_start, IP_FMT,
+ IP_ARGS(&sc->ip_addr_start));
+ snprintf(ip_str_end, sizeof ip_str_end, IP_FMT,
+ IP_ARGS(&sc->ip_addr_end));
+
+ /* We always attempt to remove existing entries, so that we know
+ * there's a pristine state for SNAT on the interface. We just ignore
+ * the results of these calls, since iptables will complain about
+ * any non-existent entries. */
+
+ /* Flush the chain that does the SNAT. */
+ snprintf(command, sizeof(command), SNAT_FLUSH_CHAIN_CMD, dev_name);
+ system(command);
+
+ /* We always try to create the a new chain. */
+ snprintf(command, sizeof(command), SNAT_ADD_CHAIN_CMD, dev_name);
+ system(command);
+
+ /* Disassociate any old SNAT chain from the POSTROUTING chain. */
+ snprintf(command, sizeof(command), SNAT_UNSET_CHAIN_CMD, dev_name,
+ dev_name);
+ system(command);
+
+ /* Associate the new chain with the POSTROUTING hook. */
+ snprintf(command, sizeof(command), SNAT_CONF_CHAIN_CMD, dev_name,
+ dev_name);
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem flushing chain for add");
+ return;
+ }
+
+ /* If configured, restrict TCP source port ranges. */
+ if ((sc->tcp_start != 0) && (sc->tcp_end != 0)) {
+ snprintf(command, sizeof(command), SNAT_ADD_TCP_CMD,
+ dev_name, ip_str_start, ip_str_end,
+ ntohs(sc->tcp_start), ntohs(sc->tcp_end));
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem adding TCP rule");
+ return;
+ }
+ }
+
+ /* If configured, restrict UDP source port ranges. */
+ if ((sc->udp_start != 0) && (sc->udp_end != 0)) {
+ snprintf(command, sizeof(command), SNAT_ADD_UDP_CMD,
+ dev_name, ip_str_start, ip_str_end,
+ ntohs(sc->udp_start), ntohs(sc->udp_end));
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem adding UDP rule");
+ return;
+ }
+ }
+
+ /* Add a rule that covers all IP traffic that would not be covered
+ * by the prior TCP or UDP ranges. */
+ snprintf(command, sizeof(command), SNAT_ADD_IP_CMD,
+ dev_name, ip_str_start, ip_str_end);
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem adding base rule");
+ return;
+ }
+}
+
+static void
+snat_del_rules(const uint8_t *dev_name)
+{
+ char command[SNAT_CMD_LEN];
+
+ /* Flush the chain that does the SNAT. */
+ snprintf(command, sizeof(command), SNAT_FLUSH_CHAIN_CMD, dev_name);
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem flushing chain for deletion");
+ return;
+ }
+
+ /* Disassociate the SNAT chain from the POSTROUTING chain. */
+ snprintf(command, sizeof(command), SNAT_UNSET_CHAIN_CMD, dev_name,
+ dev_name);
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem unsetting chain");
+ return;
+ }
+
+ /* Now we can finally delete our SNAT chain. */
+ snprintf(command, sizeof(command), SNAT_DEL_CHAIN_CMD, dev_name);
+ if (system(command) != 0) {
+ VLOG_ERR("SNAT: problem deleting chain");
+ return;
+ }
+}
+
+static void
+snat_config(const struct nx_snat_config *sc, struct snat_data *snat)
+{
+ struct snat_port_conf *c, *spc=NULL;
+ const uint8_t *netdev_name;
+
+ netdev_name = (const uint8_t *) port_watcher_get_name(snat->pw,
+ ntohs(sc->port));
+ if (!netdev_name) {
+ return;
+ }
+
+ LIST_FOR_EACH(c, struct snat_port_conf, node, &snat->port_list) {
+ if (c->config.port == sc->port) {
+ spc = c;
+ break;
+ }
+ }
+
+ if (sc->command == NXSC_ADD) {
+ if (!spc) {
+ spc = xmalloc(sizeof(*c));
+ if (!spc) {
+ VLOG_ERR("SNAT: no memory for new entry");
+ return;
+ }
+ list_push_back(&snat->port_list, &spc->node);
+ }
+ memcpy(&spc->config, sc, sizeof(spc->config));
+ snat_add_rules(sc, netdev_name);
+ } else if (spc) {
+ snat_del_rules(netdev_name);
+ list_remove(&spc->node);
+ }
+}
+
+static bool
+snat_remote_packet_cb(struct relay *r, void *snat_)
+{
+ struct snat_data *snat = snat_;
+ struct ofpbuf *msg = r->halves[HALF_REMOTE].rxbuf;
+ struct nicira_header *request = msg->data;
+ struct nx_act_config *nac = msg->data;
+ int n_configs, i;
+
+
+ if (msg->size < sizeof(struct nx_act_config)) {
+ return false;
+ }
+ request = msg->data;
+ if (request->header.type != OFPT_VENDOR
+ || request->vendor != htonl(NX_VENDOR_ID)
+ || request->subtype != htonl(NXT_ACT_SET_CONFIG)) {
+ return false;
+ }
+
+ /* We're only interested in attempts to configure SNAT */
+ if (nac->type != htons(NXAST_SNAT)) {
+ return false;
+ }
+
+ n_configs = (msg->size - sizeof *nac) / sizeof *nac->snat;
+ for (i=0; i<n_configs; i++) {
+ snat_config(&nac->snat[i], snat);
+ }
+
+ return false;
+}
+
+static void
+snat_port_changed_cb(uint16_t port_no,
+ const struct ofp_phy_port *old,
+ const struct ofp_phy_port *new,
+ void *snat_)
+{
+ struct snat_data *snat = snat_;
+ struct snat_port_conf *c;
+
+ /* We're only interested in ports that went away */
+ if (old && !new) {
+ return;
+ }
+
+ LIST_FOR_EACH(c, struct snat_port_conf, node, &snat->port_list) {
+ if (c->config.port == old->port_no) {
+ snat_del_rules(old->name);
+ list_remove(&c->node);
+ return;
+ }
+ }
+}
+
+static struct hook
+snat_hook_create(struct port_watcher *pw)
+{
+ int ret;
+ struct snat_data *snat;
+
+ ret = system(SNAT_FLUSH_ALL_CMD);
+ if (ret != 0) {
+ VLOG_ERR("SNAT: problem flushing tables");
+ }
+
+ snat = xcalloc(1, sizeof *snat);
+ snat->pw = pw;
+ list_init(&snat->port_list);
+
+ port_watcher_register_callback(pw, snat_port_changed_cb, snat);
+ return make_hook(NULL, snat_remote_packet_cb, NULL, NULL, snat);
+}
+#endif /* SUPPORT_SNAT */
+\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;
+ long long int last_tick_256ths;
+ int n_txq;
+};
+
+static bool
+stp_local_packet_cb(struct relay *r, void *stp_)
+{
+ struct ofpbuf *msg = r->halves[HALF_LOCAL].rxbuf;
+ struct ofp_header *oh;
+ 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;
+
+ oh = msg->data;
+ if (oh->type == OFPT_FEATURES_REPLY
+ && msg->size >= offsetof(struct ofp_switch_features, ports)) {
+ struct ofp_switch_features *osf = msg->data;
+ osf->capabilities |= htonl(OFPC_STP);
+ return false;
+ }
+
+ 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_config(stp->pw, port_no) & OFPPC_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 s_state = stp_port_get_state(p);
+
+ if (s_state != STP_DISABLED) {
+ VLOG_WARN("STP: Port %d entered %s state",
+ port_no, stp_state_name(s_state));
+ }
+ if (!(port_watcher_get_config(stp->pw, port_no) & OFPPC_NO_STP)) {
+ uint32_t p_config = 0;
+ uint32_t p_state;
+ switch (s_state) {
+ case STP_LISTENING:
+ p_state = OFPPS_STP_LISTEN;
+ break;
+ case STP_LEARNING:
+ p_state = OFPPS_STP_LEARN;
+ break;
+ case STP_DISABLED:
+ case STP_FORWARDING:
+ p_state = OFPPS_STP_FORWARD;
+ break;
+ case STP_BLOCKING:
+ p_state = OFPPS_STP_BLOCK;
+ break;
+ default:
+ VLOG_DBG_RL(&vrl, "STP: Port %d has bad state %x",
+ port_no, s_state);
+ p_state = OFPPS_STP_FORWARD;
+ break;
+ }
+ if (!stp_forward_in_state(s_state)) {
+ p_config = OFPPC_NO_FLOOD;
+ }
+ port_watcher_set_flags(stp->pw, port_no,
+ p_config, OFPPC_NO_FLOOD,
+ p_state, OFPPS_STP_MASK);
+ } 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_;
+ const uint8_t *port_mac;
+ struct eth_header *eth;
+ struct llc_header *llc;
+ struct ofpbuf pkt, *opo;
+
+ port_mac = port_watcher_get_hwaddr(stp->pw, port_no);
+ if (!port_mac) {
+ VLOG_WARN_RL(&vrl, "cannot send BPDU on missing port %d", port_no);
+ return;
+ }
+
+ /* 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, port_mac, 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 bool
+stp_is_port_supported(uint16_t port_no)
+{
+ return port_no < STP_MAX_PORTS;
+}
+
+static void
+stp_port_changed_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;
+
+ if (!stp_is_port_supported(port_no)) {
+ return;
+ }
+
+ p = stp_get_port(stp->stp, port_no);
+ if (!new
+ || new->config & htonl(OFPPC_NO_STP | OFPPC_PORT_DOWN)
+ || new->state & htonl(OFPPS_LINK_DOWN)) {
+ stp_port_disable(p);
+ } else {
+ int speed = 0;
+ stp_port_enable(p);
+ if (new->curr & (OFPPF_10MB_HD | OFPPF_10MB_FD)) {
+ speed = 10;
+ } else if (new->curr & (OFPPF_100MB_HD | OFPPF_100MB_FD)) {
+ speed = 100;
+ } else if (new->curr & (OFPPF_1GB_HD | OFPPF_1GB_FD)) {
+ speed = 1000;
+ } else if (new->curr & OFPPF_100MB_FD) {
+ speed = 10000;
+ }
+ stp_port_set_speed(p, speed);
+ }
+}
+
+static void
+stp_local_port_changed_cb(const struct ofp_phy_port *port, void *stp_)
+{
+ struct stp_data *stp = stp_;
+ if (port) {
+ stp_set_bridge_id(stp->stp, eth_addr_to_uint64(port->hw_addr));
+ }
+}
+
+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 stp_data *stp;
+
+ stp = xcalloc(1, sizeof *stp);
+ eth_addr_random(dpid);
+ stp->stp = stp_create("stp", eth_addr_to_uint64(dpid), send_bpdu, stp);
+ stp->pw = pw;
+ stp->local_rconn = local;
+ stp->remote_rconn = remote;
+ stp->last_tick_256ths = time_256ths();
+
+ port_watcher_register_callback(pw, stp_port_changed_cb, stp);
+ port_watcher_register_local_port_callback(pw, stp_local_port_changed_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 {
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 buffer *b)
+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);
}
/* Look up MAC address. */
memset(mac, 0, sizeof mac);
- if (ip) {
+ if (ip && in_band->of_device) {
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));
+ VLOG_DBG_RL(&vrl, "cannot look up controller hw address "
+ "("IP_FMT"): %s", IP_ARGS(&ip), strerror(retval));
}
}
have_mac = !eth_addr_is_zero(mac);
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_packet_cb(struct relay *r, int half, void *in_band_)
+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 buffer *msg = r->halves[HALF_LOCAL].rxbuf;
struct ofp_packet_in *opi;
- struct ofp_header *oh;
- size_t pkt_ofs, pkt_len;
- struct buffer pkt;
+ struct eth_header *eth;
+ struct ofpbuf payload;
struct flow flow;
- uint16_t in_port, out_port;
- const uint8_t *controller_mac;
-
- if (half != HALF_LOCAL || r->is_mgmt_conn) {
- return false;
- }
+ uint16_t in_port;
+ int out_port;
- oh = msg->data;
- if (oh->type != OFPT_PACKET_IN) {
- return false;
- }
- if (msg->size < offsetof(struct ofp_packet_in, data)) {
- VLOG_WARN_RL(&vrl, "packet too short (%zu bytes) for packet_in",
- msg->size);
+ if (!get_ofp_packet_eth_header(r, &opi, ð) || !in_band->of_device) {
return false;
}
-
- /* Extract flow data from 'opi' into 'flow'. */
- opi = msg->data;
in_port = ntohs(opi->in_port);
- pkt_ofs = offsetof(struct ofp_packet_in, data);
- pkt_len = ntohs(opi->header.length) - pkt_ofs;
- pkt.data = opi->data;
- pkt.size = pkt_len;
- flow_extract(&pkt, in_port, &flow);
/* Deal with local stuff. */
- 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 (eth_addr_equals(flow.dl_dst, in_band->mac)) {
+ out_port = mac_learning_lookup(in_band->ml, eth->eth_dst);
+ } else if (eth_addr_equals(eth->eth_dst,
+ netdev_get_etheraddr(in_band->of_device))) {
/* Sent to secure channel. */
out_port = OFPP_LOCAL;
- if (mac_learning_learn(in_band->ml, flow.dl_src, in_port)) {
- VLOG_DBG_RL(&vrl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
- ETH_ADDR_ARGS(flow.dl_src), in_port);
- }
- } else if (flow.dl_type == htons(ETH_TYPE_ARP)
- && eth_addr_is_broadcast(flow.dl_dst)
- && is_controller_mac(flow.dl_src, in_band)) {
+ 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(flow.dl_dst, in_band)) {
- if (mac_learning_learn(in_band->ml, flow.dl_src, in_port)) {
- VLOG_DBG_RL(&vrl, "learned that "ETH_ADDR_FMT" is on port %"PRIu16,
- ETH_ADDR_ARGS(flow.dl_src), in_port);
- }
-
- out_port = mac_learning_lookup(in_band->ml, controller_mac);
- if (in_port != out_port) {
+ } 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;
}
-
- /* This is controller traffic that arrived on the controller port.
- * It will get dropped below. */
- } else if (is_controller_mac(flow.dl_src, in_band)) {
- out_port = mac_learning_lookup(in_band->ml, flow.dl_dst);
- } 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),
/* 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(&pkt, in_port, out_port));
+ 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 buffer *b;
+ struct ofpbuf *b;
if (ntohl(opi->buffer_id) == UINT32_MAX) {
- b = make_unbuffered_packet_out(&pkt, in_port, out_port);
+ b = make_unbuffered_packet_out(&payload, in_port, out_port);
} else {
b = make_buffered_packet_out(ntohl(opi->buffer_id),
in_port, out_port);
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));
+ if (in_band->of_device) {
+ const uint8_t *mac = netdev_get_etheraddr(in_band->of_device);
+ 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(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_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));
+ }
}
- 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 void
+in_band_local_port_cb(const struct ofp_phy_port *port, void *in_band_)
+{
+ struct in_band_data *in_band = in_band_;
+ if (port) {
+ char name[sizeof port->name + 1];
+ get_port_name(port, name, sizeof name);
+
+ if (!in_band->of_device
+ || strcmp(netdev_get_name(in_band->of_device), name))
+ {
+ int error;
+ netdev_close(in_band->of_device);
+ error = netdev_open(name, NETDEV_ETH_TYPE_NONE,
+ &in_band->of_device);
+ if (error) {
+ VLOG_ERR("failed to open in-band control network device "
+ "\"%s\": %s", name, strerror(errno));
+ }
+ }
+ } else {
+ netdev_close(in_band->of_device);
+ in_band->of_device = NULL;
}
}
static struct hook
in_band_hook_create(const struct settings *s, struct switch_status *ss,
- struct rconn *remote)
+ struct port_watcher *pw, 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) {
- 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->of_device = NULL;
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);
+ port_watcher_register_local_port_callback(pw, in_band_local_port_cb,
+ in_band);
+ return make_hook(in_band_local_packet_cb, NULL, NULL, NULL, in_band);
}
\f
/* Fail open support. */
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. */
int disconn_secs;
bool open;
- disconn_secs = rconn_disconnected_duration(fail_open->remote_rconn);
+ if (time_now() < fail_open->boot_deadline) {
+ return;
+ }
+ disconn_secs = rconn_failure_duration(fail_open->remote_rconn);
open = disconn_secs >= fail_open->s->probe_interval * 3;
if (open != (fail_open->lswitch != NULL)) {
if (!open) {
"from controller", disconn_secs);
fail_open->last_disconn_secs = disconn_secs;
}
+ if (fail_open->lswitch) {
+ lswitch_run(fail_open->lswitch, fail_open->local_rconn);
+ }
+}
+
+static void
+fail_open_wait_cb(void *fail_open_)
+{
+ struct fail_open_data *fail_open = fail_open_;
+ if (fail_open->lswitch) {
+ lswitch_wait(fail_open->lswitch);
+ }
}
static bool
-fail_open_packet_cb(struct relay *r, int half, void *fail_open_)
+fail_open_local_packet_cb(struct relay *r, void *fail_open_)
{
struct fail_open_data *fail_open = fail_open_;
- if (half != HALF_LOCAL || r->is_mgmt_conn || !fail_open->lswitch) {
+ if (rconn_is_connected(fail_open->remote_rconn) || !fail_open->lswitch) {
return false;
} else {
lswitch_process_packet(fail_open->lswitch, fail_open->local_rconn,
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);
+ int cur_duration = rconn_failure_duration(fail_open->remote_rconn);
status_reply_put(sr, "trigger-duration=%d", trigger_duration);
status_reply_put(sr, "current-duration=%d", cur_duration);
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;
+ if (s->enable_stp) {
+ 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_packet_cb, fail_open_periodic_cb, NULL,
- fail_open);
+ return make_hook(fail_open_local_packet_cb, NULL,
+ fail_open_periodic_cb, fail_open_wait_cb, fail_open);
}
\f
struct rate_limiter {
struct rconn *remote_rconn;
/* One queue per physical port. */
- struct queue queues[OFPP_MAX];
+ struct ofp_queue queues[OFPP_MAX];
int n_queued; /* Sum over queues[*].n. */
int next_tx_port; /* Next port to check in round-robin. */
static void
drop_packet(struct rate_limiter *rl)
{
- struct queue *longest; /* Queue currently selected as longest. */
+ struct ofp_queue *longest; /* Queue currently selected as longest. */
int n_longest; /* # of queues of same length as 'longest'. */
- struct queue *q;
+ struct ofp_queue *q;
longest = &rl->queues[0];
n_longest = 1;
}
/* FIXME: do we want to pop the tail instead? */
- buffer_delete(queue_pop_head(longest));
+ ofpbuf_delete(queue_pop_head(longest));
rl->n_queued--;
}
/* Remove and return the next packet to transmit (in round-robin order). */
-static struct buffer *
+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 queue *q = &rl->queues[port];
+ struct ofp_queue *q = &rl->queues[port];
if (q->n) {
rl->next_tx_port = (port + 1) % OFPP_MAX;
rl->n_queued--;
}
static bool
-rate_limit_packet_cb(struct relay *r, int half, void *rl_)
+rate_limit_local_packet_cb(struct relay *r, void *rl_)
{
struct rate_limiter *rl = rl_;
const struct settings *s = rl->s;
- struct buffer *msg = r->halves[HALF_LOCAL].rxbuf;
- struct ofp_header *oh;
+ struct ofp_packet_in *opi;
- if (half == HALF_REMOTE) {
- return false;
- }
-
- oh = msg->data;
- if (oh->type != OFPT_PACKET_IN) {
- return false;
- }
- if (msg->size < offsetof(struct ofp_packet_in, data)) {
- VLOG_WARN_RL(&vrl, "packet too short (%zu bytes) for packet_in",
- msg->size);
+ opi = get_ofp_packet_in(r);
+ if (!opi) {
return false;
}
return false;
} else {
/* Otherwise queue it up for the periodic callback to drain out. */
- struct ofp_packet_in *opi = msg->data;
+ 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], buffer_clone(msg));
+ queue_push_tail(&rl->queues[port], ofpbuf_clone(msg));
rl->n_queued++;
rl->n_limited++;
return true;
* 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 buffer *b = dequeue_packet(rl);
+ struct ofpbuf *b = dequeue_packet(rl);
if (rconn_send_with_limit(rl->remote_rconn, b, &rl->n_txq, 10)) {
rl->n_tx_dropped++;
}
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,
+ return make_hook(rate_limit_local_packet_cb, NULL, rate_limit_periodic_cb,
rate_limit_wait_cb, rl);
}
\f
};
static bool
-switch_status_packet_cb(struct relay *r, int half, void *ss_)
+switch_status_remote_packet_cb(struct relay *r, void *ss_)
{
struct switch_status *ss = ss_;
struct rconn *rc = r->halves[HALF_REMOTE].rconn;
- struct buffer *msg = r->halves[HALF_REMOTE].rxbuf;
+ struct ofpbuf *msg = r->halves[HALF_REMOTE].rxbuf;
struct switch_status_category *c;
- struct ofp_stats_request *osr;
- struct ofp_stats_reply *reply;
+ struct nicira_header *request;
+ struct nicira_header *reply;
struct status_reply sr;
- struct ofp_header *oh;
- struct buffer *b;
+ struct ofpbuf *b;
int retval;
- if (half == HALF_LOCAL) {
+ if (msg->size < sizeof(struct nicira_header)) {
return false;
}
-
- oh = msg->data;
- if (oh->type != OFPT_STATS_REQUEST) {
- return false;
- }
- if (msg->size < sizeof(struct ofp_stats_request)) {
- VLOG_WARN_RL(&vrl, "packet too short (%zu bytes) for stats_request",
- msg->size);
+ request = msg->data;
+ if (request->header.type != OFPT_VENDOR
+ || request->vendor != htonl(NX_VENDOR_ID)
+ || request->subtype != htonl(NXT_STATUS_REQUEST)) {
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;
+ 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,
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);
+ reply = make_openflow_xid(sizeof *reply + sr.output.length,
+ OFPT_VENDOR, request->header.xid, &b);
+ reply->vendor = 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));
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);
+ return make_hook(NULL, switch_status_remote_packet_cb, NULL, NULL, ss);
}
static void
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);
+ if (d->dhcp) {
+ 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));
+ }
- const struct dhcp_msg *cfg = dhclient_get_config(d->dhcp);
- uint32_t dns_server;
- char *domain_name;
- int i;
+ 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, "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));
+ status_reply_put(sr, "lease-remaining=%u",
+ dhclient_get_lease_remaining(d->dhcp));
}
+ }
+}
+
+static void
+discovery_local_port_cb(const struct ofp_phy_port *port, void *d_)
+{
+ struct discovery *d = d_;
+ if (port) {
+ char name[OFP_MAX_PORT_NAME_LEN + 1];
+ struct netdev *netdev;
+ int retval;
- 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));
+ /* Check that this was really a change. */
+ get_port_name(port, name, sizeof name);
+ if (d->dhcp && !strcmp(netdev_get_name(dhclient_get_netdev(d->dhcp)),
+ name)) {
+ return;
}
- 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);
+ /* Destroy current DHCP client. */
+ dhclient_destroy(d->dhcp);
+ d->dhcp = NULL;
+
+ /* Bring local network device up. */
+ retval = netdev_open(name, NETDEV_ETH_TYPE_NONE, &netdev);
+ if (retval) {
+ VLOG_ERR("Could not open %s device, discovery disabled: %s",
+ name, strerror(retval));
+ return;
}
+ retval = netdev_turn_flags_on(netdev, NETDEV_UP, true);
+ if (retval) {
+ VLOG_ERR("Could not bring %s device up, discovery disabled: %s",
+ name, strerror(retval));
+ return;
+ }
+ netdev_close(netdev);
- status_reply_put(sr, "lease-remaining=%u",
- dhclient_get_lease_remaining(d->dhcp));
+ /* Initialize DHCP client. */
+ retval = dhclient_create(name, modify_dhcp_request,
+ validate_dhcp_offer, (void *) d->s, &d->dhcp);
+ if (retval) {
+ VLOG_ERR("Failed to initialize DHCP client, "
+ "discovery disabled: %s", strerror(retval));
+ return;
+ }
+ dhclient_set_max_timeout(d->dhcp, 3);
+ dhclient_init(d->dhcp, 0);
+ } else {
+ dhclient_destroy(d->dhcp);
+ d->dhcp = NULL;
}
}
+
static struct discovery *
-discovery_init(const struct settings *s, struct switch_status *ss)
+discovery_init(const struct settings *s, struct port_watcher *pw,
+ 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) {
- fatal(retval, "Could not open %s device", s->of_name);
- }
- retval = netdev_turn_flags_on(netdev, NETDEV_UP, true);
- if (retval) {
- 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) {
- fatal(retval, "Failed to initialize DHCP client");
- }
- dhclient_init(dhcp, 0);
d = xmalloc(sizeof *d);
d->s = s;
- d->dhcp = dhcp;
+ d->dhcp = NULL;
d->n_changes = 0;
switch_status_register_category(ss, "discovery", discovery_status_cb, d);
+ port_watcher_register_local_port_callback(pw, discovery_local_port_cb, d);
return d;
}
static void
discovery_question_connectivity(struct discovery *d)
{
- dhclient_force_renew(d->dhcp, 15);
+ if (d->dhcp) {
+ dhclient_force_renew(d->dhcp, 15);
+ }
}
static bool
discovery_run(struct discovery *d, char **controller_name)
{
+ if (!d->dhcp) {
+ *controller_name = NULL;
+ return true;
+ }
+
dhclient_run(d->dhcp);
if (!dhclient_changed(d->dhcp)) {
return false;
static void
discovery_wait(struct discovery *d)
{
- dhclient_wait(d->dhcp);
+ if (d->dhcp) {
+ dhclient_wait(d->dhcp);
+ }
}
static void
OPT_MAX_IDLE,
OPT_MAX_BACKOFF,
OPT_RATE_LIMIT,
- OPT_BURST_LIMIT
+ OPT_BURST_LIMIT,
+ OPT_BOOTSTRAP_CA_CERT,
+ OPT_STP,
+ OPT_NO_STP,
+ OPT_OUT_OF_BAND,
+ OPT_IN_BAND
};
static struct option long_options[] = {
{"accept-vconn", required_argument, 0, OPT_ACCEPT_VCONN},
{"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'},
+ {"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},
{"verbose", optional_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
+ DAEMON_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);
/* 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->update_resolv_conf = true;
s->rate_limit = 0;
s->burst_limit = 0;
+ s->enable_stp = false;
+ s->in_band = true;
for (;;) {
int c;
} else if (!strcmp(optarg, "closed")) {
s->fail_mode = FAIL_CLOSED;
} else {
- fatal(0,
- "-f or --fail argument must be \"open\" or \"closed\"");
+ 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) {
- fatal(0, "--inactivity-probe argument must be at least 5");
+ ofp_fatal(0, "--inactivity-probe argument must be at least 5");
}
break;
} else {
s->max_idle = atoi(optarg);
if (s->max_idle < 1 || s->max_idle > 65535) {
- fatal(0, "--max-idle argument must be between 1 and "
- "65535 or the word 'permanent'");
+ 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) {
- fatal(0, "--max-backoff argument must be at least 1");
+ ofp_fatal(0, "--max-backoff argument must be at least 1");
} else if (s->max_backoff > 3600) {
s->max_backoff = 3600;
}
if (optarg) {
s->rate_limit = atoi(optarg);
if (s->rate_limit < 1) {
- fatal(0, "--rate-limit argument must be at least 1");
+ ofp_fatal(0, "--rate-limit argument must be at least 1");
}
} else {
s->rate_limit = 1000;
case OPT_BURST_LIMIT:
s->burst_limit = atoi(optarg);
if (s->burst_limit < 1) {
- fatal(0, "--burst-limit argument must be at least 1");
+ ofp_fatal(0, "--burst-limit argument must be at least 1");
}
break;
- case 'D':
- set_detach();
+ case OPT_STP:
+ s->enable_stp = true;
break;
- case 'P':
- set_pidfile(optarg);
+ case OPT_NO_STP:
+ s->enable_stp = false;
break;
- case 'f':
- ignore_existing_pidfile();
+ case OPT_OUT_OF_BAND:
+ s->in_band = false;
+ break;
+
+ case OPT_IN_BAND:
+ s->in_band = true;
break;
case 'l':
if (s->n_listeners >= MAX_MGMT) {
- fatal(0, "-l or --listen may be specified at most %d times",
- 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();
vlog_set_verbosity(optarg);
break;
+ DAEMON_OPTION_HANDLERS
+
+#ifdef HAVE_OPENSSL
VCONN_SSL_OPTION_HANDLERS
+ case OPT_BOOTSTRAP_CA_CERT:
+ vconn_ssl_set_ca_cert_file(optarg, true);
+ break;
+#endif
+
case '?':
exit(EXIT_FAILURE);
argc -= optind;
argv += optind;
if (argc < 1 || argc > 2) {
- fatal(0, "need one or two non-option arguments; use --help for usage");
+ ofp_fatal(0, "need one or two non-option arguments; "
+ "use --help for usage");
}
/* 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]) {
- 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. */
size_t length = regerror(retval, &s->accept_controller_regex, NULL, 0);
char *buffer = xmalloc(length);
regerror(retval, &s->accept_controller_regex, buffer, length);
- fatal(0, "%s: %s", accept_re, buffer);
+ ofp_fatal(0, "%s: %s", accept_re, buffer);
}
s->accept_controller_re = accept_re;
/* 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) {
- fatal(retval, "Could not open %s device", s->of_name);
- }
-
- retval = netdev_get_flags(netdev, &flags);
- if (retval) {
- 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"
" attempts (default: 15 seconds)\n"
" -l, --listen=METHOD allow management connections on METHOD\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"
+ " --burst-limit=BURST limit on packet credit for idle time\n");
+ daemon_usage();
+ printf("\nOther options:\n"
" -v, --verbose=MODULE[:FACILITY[:LEVEL]] set logging levels\n"
" -v, --verbose set maximum verbosity level\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