uint32_t switch_mask;
uint32_t switch_gw;
enum { FAIL_DROP, FAIL_SWITCH } disconnected;
- bool stp;
int rate_limit;
int inactivity_probe;
int max_backoff;
"DISCONNECTED_MODE", ""),
"switch")
? FAIL_SWITCH : FAIL_DROP);
- config.stp = !strcmp(dict_get_string(&config_dict, "stp", ""), "yes");
config.rate_limit = dict_get_int(&config_dict, "RATE_LIMIT", -1);
config.inactivity_probe = dict_get_int(&config_dict, "INACTIVITY_PROBE",
-1);
MENU_CONTROLLER,
MENU_DISCONNECTED_MODE,
MENU_DATAPATH_ID,
- MENU_STP,
MENU_RATE_LIMIT,
MENU_INACTIVITY_PROBE,
MENU_MAX_BACKOFF,
item->id = MENU_DATAPATH_ID;
item->enabled = strcmp(config.datapath_id, "DMI");
- /* Spanning tree protocol. */
- if (debug_mode) {
- item = menu_add_item(&menu, "802.1D-1998 STP:\n%s",
- config.stp ? "Enabled" : "Disabled");
- item->id = MENU_STP;
- }
-
/* Rate-limiting. */
if (debug_mode) {
if (config.rate_limit < 0) {
config.datapath_id = out;
break;
- case MENU_STP:
- out = prompt("802.1D-1998 STP:",
- config.stp ? "Enabled" : "Disabled",
- "^(Enabled|Disabled)$");
- config.stp = !strcmp(out, "Enabled");
- free(out);
- break;
-
case MENU_RATE_LIMIT:
in = (config.rate_limit < 0
? xstrdup("Disabled")
svec_add(&set, (config.disconnected == FAIL_DROP
? "DISCONNECTED_MODE=drop"
: "DISCONNECTED_MODE=switch"));
- svec_add_nocopy(&set, xasprintf("STP=%s", config.stp ? "yes" : "no"));
if (config.rate_limit < 0) {
svec_add(&set, "RATE_LIMIT=");
} else {
lib/socket-util.h \
lib/sort.c \
lib/sort.h \
- lib/stp.c \
- lib/stp.h \
lib/stream-fd.c \
lib/stream-fd.h \
lib/stream-provider.h \
#include "poll-loop.h"
#include "queue.h"
#include "rconn.h"
-#include "stp.h"
#include "timeval.h"
#include "vconn.h"
#include "vlog.h"
VLOG_DEFINE_THIS_MODULE(learning_switch)
-enum port_state {
- P_DISABLED = 1 << 0,
- P_LISTENING = 1 << 1,
- P_LEARNING = 1 << 2,
- P_FORWARDING = 1 << 3,
- P_BLOCKING = 1 << 4
-};
-
struct lswitch {
/* If nonnegative, the switch sets up flows that expire after the given
* number of seconds (or never expire, if the value is OFP_FLOW_PERMANENT).
int max_idle;
unsigned long long int datapath_id;
- uint32_t capabilities;
time_t last_features_request;
struct mac_learning *ml; /* NULL to act as hub instead of switch. */
uint32_t wildcards; /* Wildcards to apply to flows. */
/* Number of outgoing queued packets on the rconn. */
struct rconn_packet_counter *queued;
-
- /* Spanning tree protocol implementation.
- *
- * We implement STP states by, whenever a port's STP state changes,
- * querying all the flows on the switch and then deleting any of them that
- * are inappropriate for a port's STP state. */
- long long int next_query; /* Next time at which to query all flows. */
- long long int last_query; /* Last time we sent a query. */
- long long int last_reply; /* Last time we received a query reply. */
- unsigned int port_states[STP_MAX_PORTS];
- uint32_t query_xid; /* XID used for query. */
- int n_flows, n_no_recv, n_no_send;
};
/* The log messages here could actually be useful in debugging, so keep the
static void send_features_request(struct lswitch *, struct rconn *);
static void send_default_flows(struct lswitch *sw, struct rconn *rconn,
FILE *default_flows);
-static void schedule_query(struct lswitch *, long long int delay);
-static bool may_learn(const struct lswitch *, uint16_t port_no);
-static bool may_recv(const struct lswitch *, uint16_t port_no,
- bool any_actions);
-static bool may_send(const struct lswitch *, uint16_t port_no);
typedef void packet_handler_func(struct lswitch *, struct rconn *, void *);
static packet_handler_func process_switch_features;
static packet_handler_func process_packet_in;
static packet_handler_func process_echo_request;
-static packet_handler_func process_port_status;
-static packet_handler_func process_phy_port;
-static packet_handler_func process_stats_reply;
/* Creates and returns a new learning switch.
*
FILE *default_flows)
{
struct lswitch *sw;
- size_t i;
sw = xzalloc(sizeof *sw);
sw->max_idle = max_idle;
}
sw->queue = UINT32_MAX;
sw->queued = rconn_packet_counter_create();
- sw->next_query = LLONG_MIN;
- sw->last_query = LLONG_MIN;
- sw->last_reply = LLONG_MIN;
- for (i = 0; i < STP_MAX_PORTS; i++) {
- sw->port_states[i] = P_DISABLED;
- }
send_features_request(sw, rconn);
if (default_flows) {
send_default_flows(sw, rconn, default_flows);
/* Takes care of necessary 'sw' activity, except for receiving packets (which
* the caller must do). */
void
-lswitch_run(struct lswitch *sw, struct rconn *rconn)
+lswitch_run(struct lswitch *sw)
{
- long long int now = time_msec();
-
if (sw->ml) {
mac_learning_run(sw->ml, NULL);
}
-
- /* If we're waiting for more replies, keeping waiting for up to 10 s. */
- if (sw->last_reply != LLONG_MIN) {
- if (now - sw->last_reply > 10000) {
- VLOG_ERR_RL(&rl, "%016llx: No more flow stat replies last 10 s",
- sw->datapath_id);
- sw->last_reply = LLONG_MIN;
- sw->last_query = LLONG_MIN;
- schedule_query(sw, 0);
- } else {
- return;
- }
- }
-
- /* If we're waiting for any reply at all, keep waiting for up to 10 s. */
- if (sw->last_query != LLONG_MIN) {
- if (now - sw->last_query > 10000) {
- VLOG_ERR_RL(&rl, "%016llx: No flow stat replies in last 10 s",
- sw->datapath_id);
- sw->last_query = LLONG_MIN;
- schedule_query(sw, 0);
- } else {
- return;
- }
- }
-
- /* If it's time to send another query, do so. */
- if (sw->next_query != LLONG_MIN && now >= sw->next_query) {
- sw->next_query = LLONG_MIN;
- if (!rconn_is_connected(rconn)) {
- schedule_query(sw, 1000);
- } else {
- struct ofp_stats_request *osr;
- struct ofp_flow_stats_request *ofsr;
- struct ofpbuf *b;
- int error;
-
- VLOG_DBG("%016llx: Sending flow stats request to implement STP",
- sw->datapath_id);
-
- sw->last_query = now;
- sw->query_xid = random_uint32();
- sw->n_flows = 0;
- sw->n_no_recv = 0;
- sw->n_no_send = 0;
- osr = make_openflow_xid(sizeof *osr + sizeof *ofsr,
- OFPT_STATS_REQUEST, sw->query_xid, &b);
- osr->type = htons(OFPST_FLOW);
- osr->flags = htons(0);
- ofsr = (struct ofp_flow_stats_request *) osr->body;
- ofsr->match.wildcards = htonl(OFPFW_ALL);
- ofsr->table_id = 0xff;
- ofsr->out_port = htons(OFPP_NONE);
-
- error = rconn_send(rconn, b, NULL);
- if (error) {
- VLOG_WARN_RL(&rl, "%016llx: sending flow stats request "
- "failed: %s", sw->datapath_id, strerror(error));
- ofpbuf_delete(b);
- schedule_query(sw, 1000);
- }
- }
- }
-}
-
-static void
-wait_timeout(long long int started)
-{
- poll_timer_wait_until(started + 10000);
}
void
if (sw->ml) {
mac_learning_wait(sw->ml);
}
-
- if (sw->last_reply != LLONG_MIN) {
- wait_timeout(sw->last_reply);
- } else if (sw->last_query != LLONG_MIN) {
- wait_timeout(sw->last_query);
- }
}
/* Processes 'msg', which should be an OpenFlow received on 'rconn', according
offsetof(struct ofp_packet_in, data),
process_packet_in
},
- {
- OFPT_PORT_STATUS,
- sizeof(struct ofp_port_status),
- process_port_status
- },
- {
- OFPT_STATS_REPLY,
- offsetof(struct ofp_stats_reply, body),
- process_stats_reply
- },
{
OFPT_FLOW_REMOVED,
sizeof(struct ofp_flow_removed),
}
static void
-schedule_query(struct lswitch *sw, long long int delay)
-{
- long long int now = time_msec();
- if (sw->next_query == LLONG_MIN || sw->next_query > now + delay) {
- sw->next_query = now + delay;
- }
-}
-
-static void
-process_switch_features(struct lswitch *sw, struct rconn *rconn, void *osf_)
+process_switch_features(struct lswitch *sw, struct rconn *rconn OVS_UNUSED,
+ void *osf_)
{
struct ofp_switch_features *osf = osf_;
- size_t n_ports = ((ntohs(osf->header.length)
- - offsetof(struct ofp_switch_features, ports))
- / sizeof *osf->ports);
- size_t i;
sw->datapath_id = ntohll(osf->datapath_id);
- sw->capabilities = ntohl(osf->capabilities);
- for (i = 0; i < n_ports; i++) {
- process_phy_port(sw, rconn, &osf->ports[i]);
- }
- if (sw->capabilities & OFPC_STP) {
- schedule_query(sw, 1000);
- }
}
static uint16_t
uint16_t out_port;
/* Learn the source MAC. */
- if (may_learn(sw, flow->in_port) && sw->ml) {
+ if (sw->ml) {
if (mac_learning_learn(sw->ml, flow->dl_src, 0, flow->in_port,
GRAT_ARP_LOCK_NONE)) {
VLOG_DBG_RL(&rl, "%016llx: learned that "ETH_ADDR_FMT" is on "
return OFPP_NONE;
}
- if (!may_recv(sw, flow->in_port, false)) {
- /* STP prevents receiving anything on this port. */
- return OFPP_NONE;
- }
-
out_port = OFPP_FLOOD;
if (sw->ml) {
int learned_port = mac_learning_lookup(sw->ml, flow->dl_dst, 0, NULL);
- if (learned_port >= 0 && may_send(sw, learned_port)) {
+ if (learned_port >= 0) {
out_port = learned_port;
if (out_port == flow->in_port) {
/* Don't send a packet back out its input port. */
struct ofp_header *rq = rq_;
queue_tx(sw, rconn, make_echo_reply(rq));
}
-
-static void
-process_port_status(struct lswitch *sw, struct rconn *rconn, void *ops_)
-{
- struct ofp_port_status *ops = ops_;
- process_phy_port(sw, rconn, &ops->desc);
-}
-
-static void
-process_phy_port(struct lswitch *sw, struct rconn *rconn OVS_UNUSED,
- void *opp_)
-{
- const struct ofp_phy_port *opp = opp_;
- uint16_t port_no = ntohs(opp->port_no);
- if (sw->capabilities & OFPC_STP && port_no < STP_MAX_PORTS) {
- uint32_t config = ntohl(opp->config);
- uint32_t state = ntohl(opp->state);
- unsigned int *port_state = &sw->port_states[port_no];
- unsigned int new_port_state;
-
- if (!(config & (OFPPC_NO_STP | OFPPC_PORT_DOWN))
- && !(state & OFPPS_LINK_DOWN))
- {
- switch (state & OFPPS_STP_MASK) {
- case OFPPS_STP_LISTEN:
- new_port_state = P_LISTENING;
- break;
- case OFPPS_STP_LEARN:
- new_port_state = P_LEARNING;
- break;
- case OFPPS_STP_FORWARD:
- new_port_state = P_FORWARDING;
- break;
- case OFPPS_STP_BLOCK:
- new_port_state = P_BLOCKING;
- break;
- default:
- new_port_state = P_DISABLED;
- break;
- }
- } else {
- new_port_state = P_FORWARDING;
- }
- if (*port_state != new_port_state) {
- *port_state = new_port_state;
- schedule_query(sw, 1000);
- }
- }
-}
-
-static unsigned int
-get_port_state(const struct lswitch *sw, uint16_t port_no)
-{
- return (port_no >= STP_MAX_PORTS || !(sw->capabilities & OFPC_STP)
- ? P_FORWARDING
- : sw->port_states[port_no]);
-}
-
-static bool
-may_learn(const struct lswitch *sw, uint16_t port_no)
-{
- return get_port_state(sw, port_no) & (P_LEARNING | P_FORWARDING);
-}
-
-static bool
-may_recv(const struct lswitch *sw, uint16_t port_no, bool any_actions)
-{
- unsigned int state = get_port_state(sw, port_no);
- return !(any_actions
- ? state & (P_DISABLED | P_LISTENING | P_BLOCKING)
- : state & (P_DISABLED | P_LISTENING | P_BLOCKING | P_LEARNING));
-}
-
-static bool
-may_send(const struct lswitch *sw, uint16_t port_no)
-{
- return get_port_state(sw, port_no) & P_FORWARDING;
-}
-
-static void
-process_flow_stats(struct lswitch *sw, struct rconn *rconn,
- const struct ofp_flow_stats *ofs)
-{
- const char *end = (char *) ofs + ntohs(ofs->length);
- bool delete = false;
-
- /* Decide to delete the flow if it matches on an STP-disabled physical
- * port. But don't delete it if the flow just drops all received packets,
- * because that's a perfectly reasonable thing to do for disabled physical
- * ports. */
- if (!(ofs->match.wildcards & htonl(OFPFW_IN_PORT))) {
- if (!may_recv(sw, ntohs(ofs->match.in_port),
- end > (char *) ofs->actions)) {
- delete = true;
- sw->n_no_recv++;
- }
- }
-
- /* Decide to delete the flow if it forwards to an STP-disabled physical
- * port. */
- if (!delete) {
- const struct ofp_action_header *a;
- size_t len;
-
- for (a = ofs->actions; (char *) a < end; a += len / 8) {
- len = ntohs(a->len);
- if (len > end - (char *) a) {
- VLOG_DBG_RL(&rl, "%016llx: action exceeds available space "
- "(%zu > %td)",
- sw->datapath_id, len, end - (char *) a);
- break;
- } else if (len % 8) {
- VLOG_DBG_RL(&rl, "%016llx: action length (%zu) not multiple "
- "of 8 bytes", sw->datapath_id, len);
- break;
- }
-
- if (a->type == htons(OFPAT_OUTPUT)) {
- struct ofp_action_output *oao = (struct ofp_action_output *) a;
- if (!may_send(sw, ntohs(oao->port))) {
- delete = true;
- sw->n_no_send++;
- break;
- }
- }
- }
- }
-
- /* Delete the flow. */
- if (delete) {
- struct ofp_flow_mod *ofm;
- struct ofpbuf *b;
-
- ofm = make_openflow(offsetof(struct ofp_flow_mod, actions),
- OFPT_FLOW_MOD, &b);
- ofm->match = ofs->match;
- ofm->command = OFPFC_DELETE_STRICT;
- rconn_send(rconn, b, NULL);
- }
-}
-
-static void
-process_stats_reply(struct lswitch *sw, struct rconn *rconn, void *osr_)
-{
- struct ofp_stats_reply *osr = osr_;
- struct flow_stats_iterator i;
- const struct ofp_flow_stats *fs;
-
- if (sw->last_query == LLONG_MIN
- || osr->type != htons(OFPST_FLOW)
- || osr->header.xid != sw->query_xid) {
- return;
- }
- for (fs = flow_stats_first(&i, osr); fs; fs = flow_stats_next(&i)) {
- sw->n_flows++;
- process_flow_stats(sw, rconn, fs);
- }
- if (!(osr->flags & htons(OFPSF_REPLY_MORE))) {
- VLOG_DBG("%016llx: Deleted %d of %d received flows to "
- "implement STP, %d because of no-recv, %d because of "
- "no-send", sw->datapath_id,
- sw->n_no_recv + sw->n_no_send, sw->n_flows,
- sw->n_no_recv, sw->n_no_send);
- sw->last_query = LLONG_MIN;
- sw->last_reply = LLONG_MIN;
- } else {
- sw->last_reply = time_msec();
- }
-}
-
bool exact_flows, int max_idle,
bool action_normal, FILE *default_flows);
void lswitch_set_queue(struct lswitch *sw, uint32_t queue);
-void lswitch_run(struct lswitch *, struct rconn *);
+void lswitch_run(struct lswitch *);
void lswitch_wait(struct lswitch *);
void lswitch_destroy(struct lswitch *);
void lswitch_process_packet(struct lswitch *, struct rconn *,
static const uint8_t eth_addr_broadcast[ETH_ADDR_LEN] OVS_UNUSED
= { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
+static const uint8_t eth_addr_stp[ETH_ADDR_LEN] OVS_UNUSED
+ = { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x01 };
+
static inline bool eth_addr_is_broadcast(const uint8_t ea[6])
{
return (ea[0] & ea[1] & ea[2] & ea[3] & ea[4] & ea[5]) == 0xff;
+++ /dev/null
-/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/* Based on sample implementation in 802.1D-1998. Above copyright and license
- * applies to all modifications. */
-
-#include <config.h>
-
-#include "stp.h"
-#include <sys/types.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <assert.h>
-#include <inttypes.h>
-#include <stdlib.h>
-#include "ofpbuf.h"
-#include "packets.h"
-#include "util.h"
-#include "vlog.h"
-#include "xtoxll.h"
-
-VLOG_DEFINE_THIS_MODULE(stp)
-
-/* Ethernet address used as the destination for STP frames. */
-const uint8_t stp_eth_addr[ETH_ADDR_LEN]
-= { 0x01, 0x80, 0xC2, 0x00, 0x00, 0x01 };
-
-#define STP_PROTOCOL_ID 0x0000
-#define STP_PROTOCOL_VERSION 0x00
-#define STP_TYPE_CONFIG 0x00
-#define STP_TYPE_TCN 0x80
-
-struct stp_bpdu_header {
- uint16_t protocol_id; /* STP_PROTOCOL_ID. */
- uint8_t protocol_version; /* STP_PROTOCOL_VERSION. */
- uint8_t bpdu_type; /* One of STP_TYPE_*. */
-} __attribute__((packed));
-BUILD_ASSERT_DECL(sizeof(struct stp_bpdu_header) == 4);
-
-enum stp_config_bpdu_flags {
- STP_CONFIG_TOPOLOGY_CHANGE_ACK = 0x80,
- STP_CONFIG_TOPOLOGY_CHANGE = 0x01
-};
-
-struct stp_config_bpdu {
- struct stp_bpdu_header header; /* Type STP_TYPE_CONFIG. */
- uint8_t flags; /* STP_CONFIG_* flags. */
- uint64_t root_id; /* 8.5.1.1: Bridge believed to be root. */
- uint32_t root_path_cost; /* 8.5.1.2: Cost of path to root. */
- uint64_t bridge_id; /* 8.5.1.3: ID of transmitting bridge. */
- uint16_t port_id; /* 8.5.1.4: Port transmitting the BPDU. */
- uint16_t message_age; /* 8.5.1.5: Age of BPDU at tx time. */
- uint16_t max_age; /* 8.5.1.6: Timeout for received data. */
- uint16_t hello_time; /* 8.5.1.7: Time between BPDU generation. */
- uint16_t forward_delay; /* 8.5.1.8: State progression delay. */
-} __attribute__((packed));
-BUILD_ASSERT_DECL(sizeof(struct stp_config_bpdu) == 35);
-
-struct stp_tcn_bpdu {
- struct stp_bpdu_header header; /* Type STP_TYPE_TCN. */
-} __attribute__((packed));
-BUILD_ASSERT_DECL(sizeof(struct stp_tcn_bpdu) == 4);
-
-struct stp_timer {
- bool active; /* Timer in use? */
- int value; /* Current value of timer, counting up. */
-};
-
-struct stp_port {
- struct stp *stp;
- int port_id; /* 8.5.5.1: Unique port identifier. */
- enum stp_state state; /* 8.5.5.2: Current state. */
- int path_cost; /* 8.5.5.3: Cost of tx/rx on this port. */
- stp_identifier designated_root; /* 8.5.5.4. */
- int designated_cost; /* 8.5.5.5: Path cost to root on port. */
- stp_identifier designated_bridge; /* 8.5.5.6. */
- int designated_port; /* 8.5.5.7: Port to send config msgs on. */
- bool topology_change_ack; /* 8.5.5.8: Flag for next config BPDU. */
- bool config_pending; /* 8.5.5.9: Send BPDU when hold expires? */
- bool change_detection_enabled; /* 8.5.5.10: Detect topology changes? */
-
- struct stp_timer message_age_timer; /* 8.5.6.1: Age of received info. */
- struct stp_timer forward_delay_timer; /* 8.5.6.2: State change timer. */
- struct stp_timer hold_timer; /* 8.5.6.3: BPDU rate limit timer. */
-
- bool state_changed;
-};
-
-struct stp {
- /* Static bridge data. */
- char *name; /* Human-readable name for log messages. */
- stp_identifier bridge_id; /* 8.5.3.7: This bridge. */
- int max_age; /* 8.5.3.4: Time to drop received data. */
- int hello_time; /* 8.5.3.5: Time between sending BPDUs. */
- int forward_delay; /* 8.5.3.6: Delay between state changes. */
- int bridge_max_age; /* 8.5.3.8: max_age when we're root. */
- int bridge_hello_time; /* 8.5.3.9: hello_time as root. */
- int bridge_forward_delay; /* 8.5.3.10: forward_delay as root. */
- int rq_max_age; /* User-requested max age, in ms. */
- int rq_hello_time; /* User-requested hello time, in ms. */
- int rq_forward_delay; /* User-requested forward delay, in ms. */
- int elapsed_remainder; /* Left-over msecs from last stp_tick(). */
-
- /* Dynamic bridge data. */
- stp_identifier designated_root; /* 8.5.3.1: Bridge believed to be root. */
- unsigned int root_path_cost; /* 8.5.3.2: Cost of path to root. */
- struct stp_port *root_port; /* 8.5.3.3: Lowest cost port to root. */
- bool topology_change_detected; /* 8.5.3.11: Detected a topology change? */
- bool topology_change; /* 8.5.3.12: Received topology change? */
-
- /* Bridge timers. */
- struct stp_timer hello_timer; /* 8.5.4.1: Hello timer. */
- struct stp_timer tcn_timer; /* 8.5.4.2: Topology change timer. */
- struct stp_timer topology_change_timer; /* 8.5.4.3. */
-
- /* Ports. */
- struct stp_port ports[STP_MAX_PORTS];
-
- /* Interface to client. */
- struct stp_port *first_changed_port;
- void (*send_bpdu)(struct ofpbuf *bpdu, int port_no, void *aux);
- void *aux;
-};
-
-#define FOR_EACH_ENABLED_PORT(PORT, STP) \
- for ((PORT) = stp_next_enabled_port((STP), (STP)->ports); \
- (PORT); \
- (PORT) = stp_next_enabled_port((STP), (PORT) + 1))
-static struct stp_port *
-stp_next_enabled_port(const struct stp *stp, const struct stp_port *port)
-{
- for (; port < &stp->ports[ARRAY_SIZE(stp->ports)]; port++) {
- if (port->state != STP_DISABLED) {
- return (struct stp_port *) port;
- }
- }
- return NULL;
-}
-
-#define MESSAGE_AGE_INCREMENT 1
-
-static void stp_transmit_config(struct stp_port *);
-static bool stp_supersedes_port_info(const struct stp_port *,
- const struct stp_config_bpdu *);
-static void stp_record_config_information(struct stp_port *,
- const struct stp_config_bpdu *);
-static void stp_record_config_timeout_values(struct stp *,
- const struct stp_config_bpdu *);
-static bool stp_is_designated_port(const struct stp_port *);
-static void stp_config_bpdu_generation(struct stp *);
-static void stp_transmit_tcn(struct stp *);
-static void stp_configuration_update(struct stp *);
-static bool stp_supersedes_root(const struct stp_port *root,
- const struct stp_port *);
-static void stp_root_selection(struct stp *);
-static void stp_designated_port_selection(struct stp *);
-static void stp_become_designated_port(struct stp_port *);
-static void stp_port_state_selection(struct stp *);
-static void stp_make_forwarding(struct stp_port *);
-static void stp_make_blocking(struct stp_port *);
-static void stp_set_port_state(struct stp_port *, enum stp_state);
-static void stp_topology_change_detection(struct stp *);
-static void stp_topology_change_acknowledged(struct stp *);
-static void stp_acknowledge_topology_change(struct stp_port *);
-static void stp_received_config_bpdu(struct stp *, struct stp_port *,
- const struct stp_config_bpdu *);
-static void stp_received_tcn_bpdu(struct stp *, struct stp_port *);
-static void stp_hello_timer_expiry(struct stp *);
-static void stp_message_age_timer_expiry(struct stp_port *);
-static bool stp_is_designated_for_some_port(const struct stp *);
-static void stp_forward_delay_timer_expiry(struct stp_port *);
-static void stp_tcn_timer_expiry(struct stp *);
-static void stp_topology_change_timer_expiry(struct stp *);
-static void stp_hold_timer_expiry(struct stp_port *);
-static void stp_initialize_port(struct stp_port *, enum stp_state);
-static void stp_become_root_bridge(struct stp *);
-static void stp_update_bridge_timers(struct stp *);
-
-static int clamp(int x, int min, int max);
-static int ms_to_timer(int ms);
-static int ms_to_timer_remainder(int ms);
-static int timer_to_ms(int timer);
-static void stp_start_timer(struct stp_timer *, int value);
-static void stp_stop_timer(struct stp_timer *);
-static bool stp_timer_expired(struct stp_timer *, int elapsed, int timeout);
-
-static void stp_send_bpdu(struct stp_port *, const void *, size_t);
-
-/* Creates and returns a new STP instance that initially has no ports enabled.
- *
- * 'bridge_id' should be a 48-bit MAC address as returned by
- * eth_addr_to_uint64(). 'bridge_id' may also have a priority value in its top
- * 16 bits; if those bits are set to 0, STP_DEFAULT_BRIDGE_PRIORITY is used.
- * (This priority may be changed with stp_set_bridge_priority().)
- *
- * When the bridge needs to send out a BPDU, it calls 'send_bpdu'. This
- * callback may be called from stp_tick() or stp_received_bpdu(). The
- * arguments to 'send_bpdu' are an STP BPDU encapsulated in
- */
-struct stp *
-stp_create(const char *name, stp_identifier bridge_id,
- void (*send_bpdu)(struct ofpbuf *bpdu, int port_no, void *aux),
- void *aux)
-{
- struct stp *stp;
- struct stp_port *p;
-
- stp = xzalloc(sizeof *stp);
- stp->name = xstrdup(name);
- stp->bridge_id = bridge_id;
- if (!(stp->bridge_id >> 48)) {
- stp->bridge_id |= (uint64_t) STP_DEFAULT_BRIDGE_PRIORITY << 48;
- }
-
- stp->rq_max_age = 6000;
- stp->rq_hello_time = 2000;
- stp->rq_forward_delay = 4000;
- stp_update_bridge_timers(stp);
- stp->max_age = stp->bridge_max_age;
- stp->hello_time = stp->bridge_hello_time;
- stp->forward_delay = stp->bridge_forward_delay;
-
- stp->designated_root = stp->bridge_id;
- stp->root_path_cost = 0;
- stp->root_port = NULL;
- stp->topology_change_detected = false;
- stp->topology_change = false;
-
- stp_stop_timer(&stp->tcn_timer);
- stp_stop_timer(&stp->topology_change_timer);
- stp_start_timer(&stp->hello_timer, 0);
-
- stp->send_bpdu = send_bpdu;
- stp->aux = aux;
-
- stp->first_changed_port = &stp->ports[ARRAY_SIZE(stp->ports)];
- for (p = stp->ports; p < &stp->ports[ARRAY_SIZE(stp->ports)]; p++) {
- p->stp = stp;
- p->port_id = (stp_port_no(p) + 1) | (STP_DEFAULT_PORT_PRIORITY << 8);
- p->path_cost = 19; /* Recommended default for 100 Mb/s link. */
- stp_initialize_port(p, STP_DISABLED);
- }
- return stp;
-}
-
-/* Destroys 'stp'. */
-void
-stp_destroy(struct stp *stp)
-{
- if (stp) {
- free(stp->name);
- free(stp);
- }
-}
-
-/* Runs 'stp' given that 'ms' milliseconds have passed. */
-void
-stp_tick(struct stp *stp, int ms)
-{
- struct stp_port *p;
- int elapsed;
-
- /* Convert 'ms' to STP timer ticks. Preserve any leftover milliseconds
- * from previous stp_tick() calls so that we don't lose STP ticks when we
- * are called too frequently. */
- ms = clamp(ms, 0, INT_MAX - 1000) + stp->elapsed_remainder;
- elapsed = ms_to_timer(ms);
- stp->elapsed_remainder = ms_to_timer_remainder(ms);
- if (!elapsed) {
- return;
- }
-
- if (stp_timer_expired(&stp->hello_timer, elapsed, stp->hello_time)) {
- stp_hello_timer_expiry(stp);
- }
- if (stp_timer_expired(&stp->tcn_timer, elapsed, stp->bridge_hello_time)) {
- stp_tcn_timer_expiry(stp);
- }
- if (stp_timer_expired(&stp->topology_change_timer, elapsed,
- stp->max_age + stp->forward_delay)) {
- stp_topology_change_timer_expiry(stp);
- }
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (stp_timer_expired(&p->message_age_timer, elapsed, stp->max_age)) {
- stp_message_age_timer_expiry(p);
- }
- }
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (stp_timer_expired(&p->forward_delay_timer, elapsed,
- stp->forward_delay)) {
- stp_forward_delay_timer_expiry(p);
- }
- if (stp_timer_expired(&p->hold_timer, elapsed, ms_to_timer(1000))) {
- stp_hold_timer_expiry(p);
- }
- }
-}
-
-static void
-set_bridge_id(struct stp *stp, stp_identifier new_bridge_id)
-{
- if (new_bridge_id != stp->bridge_id) {
- bool root;
- struct stp_port *p;
-
- root = stp_is_root_bridge(stp);
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (stp_is_designated_port(p)) {
- p->designated_bridge = new_bridge_id;
- }
- }
- stp->bridge_id = new_bridge_id;
- stp_configuration_update(stp);
- stp_port_state_selection(stp);
- if (stp_is_root_bridge(stp) && !root) {
- stp_become_root_bridge(stp);
- }
- }
-}
-
-void
-stp_set_bridge_id(struct stp *stp, stp_identifier bridge_id)
-{
- const uint64_t mac_bits = (UINT64_C(1) << 48) - 1;
- const uint64_t pri_bits = ~mac_bits;
- set_bridge_id(stp, (stp->bridge_id & pri_bits) | (bridge_id & mac_bits));
-}
-
-void
-stp_set_bridge_priority(struct stp *stp, uint16_t new_priority)
-{
- const uint64_t mac_bits = (UINT64_C(1) << 48) - 1;
- set_bridge_id(stp, ((stp->bridge_id & mac_bits)
- | ((uint64_t) new_priority << 48)));
-}
-
-/* Sets the desired hello time for 'stp' to 'ms', in milliseconds. The actual
- * hello time is clamped to the range of 1 to 10 seconds and subject to the
- * relationship (bridge_max_age >= 2 * (bridge_hello_time + 1 s)). The bridge
- * hello time is only used when 'stp' is the root bridge. */
-void
-stp_set_hello_time(struct stp *stp, int ms)
-{
- stp->rq_hello_time = ms;
- stp_update_bridge_timers(stp);
-}
-
-/* Sets the desired max age for 'stp' to 'ms', in milliseconds. The actual max
- * age is clamped to the range of 6 to 40 seconds and subject to the
- * relationships (2 * (bridge_forward_delay - 1 s) >= bridge_max_age) and
- * (bridge_max_age >= 2 * (bridge_hello_time + 1 s)). The bridge max age is
- * only used when 'stp' is the root bridge. */
-void
-stp_set_max_age(struct stp *stp, int ms)
-{
- stp->rq_max_age = ms;
- stp_update_bridge_timers(stp);
-}
-
-/* Sets the desired forward delay for 'stp' to 'ms', in milliseconds. The
- * actual forward delay is clamped to the range of 4 to 30 seconds and subject
- * to the relationship (2 * (bridge_forward_delay - 1 s) >= bridge_max_age).
- * The bridge forward delay is only used when 'stp' is the root bridge. */
-void
-stp_set_forward_delay(struct stp *stp, int ms)
-{
- stp->rq_forward_delay = ms;
- stp_update_bridge_timers(stp);
-}
-
-/* Returns the name given to 'stp' in the call to stp_create(). */
-const char *
-stp_get_name(const struct stp *stp)
-{
- return stp->name;
-}
-
-/* Returns the bridge ID for 'stp'. */
-stp_identifier
-stp_get_bridge_id(const struct stp *stp)
-{
- return stp->bridge_id;
-}
-
-/* Returns the bridge ID of the bridge currently believed to be the root. */
-stp_identifier
-stp_get_designated_root(const struct stp *stp)
-{
- return stp->designated_root;
-}
-
-/* Returns true if 'stp' believes itself to the be root of the spanning tree,
- * false otherwise. */
-bool
-stp_is_root_bridge(const struct stp *stp)
-{
- return stp->bridge_id == stp->designated_root;
-}
-
-/* Returns the cost of the path from 'stp' to the root of the spanning tree. */
-int
-stp_get_root_path_cost(const struct stp *stp)
-{
- return stp->root_path_cost;
-}
-
-/* Returns the bridge hello time, in ms. The returned value is not necessarily
- * the value passed to stp_set_hello_time(): it is clamped to the valid range
- * and quantized to the STP timer resolution. */
-int
-stp_get_hello_time(const struct stp *stp)
-{
- return timer_to_ms(stp->bridge_hello_time);
-}
-
-/* Returns the bridge max age, in ms. The returned value is not necessarily
- * the value passed to stp_set_max_age(): it is clamped to the valid range,
- * quantized to the STP timer resolution, and adjusted to match the constraints
- * due to the hello time. */
-int
-stp_get_max_age(const struct stp *stp)
-{
- return timer_to_ms(stp->bridge_max_age);
-}
-
-/* Returns the bridge forward delay, in ms. The returned value is not
- * necessarily the value passed to stp_set_forward_delay(): it is clamped to
- * the valid range, quantized to the STP timer resolution, and adjusted to
- * match the constraints due to the forward delay. */
-int
-stp_get_forward_delay(const struct stp *stp)
-{
- return timer_to_ms(stp->bridge_forward_delay);
-}
-
-/* Returns the port in 'stp' with index 'port_no', which must be between 0 and
- * STP_MAX_PORTS. */
-struct stp_port *
-stp_get_port(struct stp *stp, int port_no)
-{
- assert(port_no >= 0 && port_no < ARRAY_SIZE(stp->ports));
- return &stp->ports[port_no];
-}
-
-/* Returns the port connecting 'stp' to the root bridge, or a null pointer if
- * there is no such port. */
-struct stp_port *
-stp_get_root_port(struct stp *stp)
-{
- return stp->root_port;
-}
-
-/* Finds a port whose state has changed. If successful, stores the port whose
- * state changed in '*portp' and returns true. If no port has changed, stores
- * NULL in '*portp' and returns false. */
-bool
-stp_get_changed_port(struct stp *stp, struct stp_port **portp)
-{
- struct stp_port *end = &stp->ports[ARRAY_SIZE(stp->ports)];
- struct stp_port *p;
-
- for (p = stp->first_changed_port; p < end; p++) {
- if (p->state_changed) {
- p->state_changed = false;
- stp->first_changed_port = p + 1;
- *portp = p;
- return true;
- }
- }
- stp->first_changed_port = end;
- *portp = NULL;
- return false;
-}
-
-/* Returns the name for the given 'state' (for use in debugging and log
- * messages). */
-const char *
-stp_state_name(enum stp_state state)
-{
- switch (state) {
- case STP_DISABLED:
- return "disabled";
- case STP_LISTENING:
- return "listening";
- case STP_LEARNING:
- return "learning";
- case STP_FORWARDING:
- return "forwarding";
- case STP_BLOCKING:
- return "blocking";
- default:
- NOT_REACHED();
- }
-}
-
-/* Returns true if 'state' is one in which packets received on a port should
- * be forwarded, false otherwise.
- *
- * Returns true if 'state' is STP_DISABLED, since presumably in that case the
- * port should still work, just not have STP applied to it. */
-bool
-stp_forward_in_state(enum stp_state state)
-{
- return (state & (STP_DISABLED | STP_FORWARDING)) != 0;
-}
-
-/* Returns true if 'state' is one in which MAC learning should be done on
- * packets received on a port, false otherwise.
- *
- * Returns true if 'state' is STP_DISABLED, since presumably in that case the
- * port should still work, just not have STP applied to it. */
-bool
-stp_learn_in_state(enum stp_state state)
-{
- return (state & (STP_DISABLED | STP_LEARNING | STP_FORWARDING)) != 0;
-}
-
-/* Notifies the STP entity that bridge protocol data unit 'bpdu', which is
- * 'bpdu_size' bytes in length, was received on port 'p'.
- *
- * This function may call the 'send_bpdu' function provided to stp_create(). */
-void
-stp_received_bpdu(struct stp_port *p, const void *bpdu, size_t bpdu_size)
-{
- struct stp *stp = p->stp;
- const struct stp_bpdu_header *header;
-
- if (p->state == STP_DISABLED) {
- return;
- }
-
- if (bpdu_size < sizeof(struct stp_bpdu_header)) {
- VLOG_WARN("%s: received runt %zu-byte BPDU", stp->name, bpdu_size);
- return;
- }
-
- header = bpdu;
- if (header->protocol_id != htons(STP_PROTOCOL_ID)) {
- VLOG_WARN("%s: received BPDU with unexpected protocol ID %"PRIu16,
- stp->name, ntohs(header->protocol_id));
- return;
- }
- if (header->protocol_version != STP_PROTOCOL_VERSION) {
- VLOG_DBG("%s: received BPDU with unexpected protocol version %"PRIu8,
- stp->name, header->protocol_version);
- }
-
- switch (header->bpdu_type) {
- case STP_TYPE_CONFIG:
- if (bpdu_size < sizeof(struct stp_config_bpdu)) {
- VLOG_WARN("%s: received config BPDU with invalid size %zu",
- stp->name, bpdu_size);
- return;
- }
- stp_received_config_bpdu(stp, p, bpdu);
- break;
-
- case STP_TYPE_TCN:
- if (bpdu_size != sizeof(struct stp_tcn_bpdu)) {
- VLOG_WARN("%s: received TCN BPDU with invalid size %zu",
- stp->name, bpdu_size);
- return;
- }
- stp_received_tcn_bpdu(stp, p);
- break;
-
- default:
- VLOG_WARN("%s: received BPDU of unexpected type %"PRIu8,
- stp->name, header->bpdu_type);
- return;
- }
-}
-
-/* Returns the STP entity in which 'p' is nested. */
-struct stp *
-stp_port_get_stp(struct stp_port *p)
-{
- return p->stp;
-}
-
-/* Returns the index of port 'p' within its bridge. */
-int
-stp_port_no(const struct stp_port *p)
-{
- struct stp *stp = p->stp;
- assert(p >= stp->ports && p < &stp->ports[ARRAY_SIZE(stp->ports)]);
- return p - stp->ports;
-}
-
-/* Returns the state of port 'p'. */
-enum stp_state
-stp_port_get_state(const struct stp_port *p)
-{
- return p->state;
-}
-
-/* Disables STP on port 'p'. */
-void
-stp_port_disable(struct stp_port *p)
-{
- struct stp *stp = p->stp;
- if (p->state != STP_DISABLED) {
- bool root = stp_is_root_bridge(stp);
- stp_become_designated_port(p);
- stp_set_port_state(p, STP_DISABLED);
- p->topology_change_ack = false;
- p->config_pending = false;
- stp_stop_timer(&p->message_age_timer);
- stp_stop_timer(&p->forward_delay_timer);
- stp_configuration_update(stp);
- stp_port_state_selection(stp);
- if (stp_is_root_bridge(stp) && !root) {
- stp_become_root_bridge(stp);
- }
- }
-}
-
-/* Enables STP on port 'p'. The port will initially be in "blocking" state. */
-void
-stp_port_enable(struct stp_port *p)
-{
- if (p->state == STP_DISABLED) {
- stp_initialize_port(p, STP_BLOCKING);
- stp_port_state_selection(p->stp);
- }
-}
-
-/* Sets the priority of port 'p' to 'new_priority'. Lower numerical values
- * are interpreted as higher priorities. */
-void
-stp_port_set_priority(struct stp_port *p, uint8_t new_priority)
-{
- uint16_t new_port_id = (p->port_id & 0xff) | (new_priority << 8);
- if (p->port_id != new_port_id) {
- struct stp *stp = p->stp;
- if (stp_is_designated_port(p)) {
- p->designated_port = new_port_id;
- }
- p->port_id = new_port_id;
- if (stp->bridge_id == p->designated_bridge
- && p->port_id < p->designated_port) {
- stp_become_designated_port(p);
- stp_port_state_selection(stp);
- }
- }
-}
-
-/* Sets the path cost of port 'p' to 'path_cost'. Lower values are generally
- * used to indicate faster links. Use stp_port_set_speed() to automatically
- * generate a default path cost from a link speed. */
-void
-stp_port_set_path_cost(struct stp_port *p, uint16_t path_cost)
-{
- if (p->path_cost != path_cost) {
- struct stp *stp = p->stp;
- p->path_cost = path_cost;
- stp_configuration_update(stp);
- stp_port_state_selection(stp);
- }
-}
-
-/* Sets the path cost of port 'p' based on 'speed' (measured in Mb/s). */
-void
-stp_port_set_speed(struct stp_port *p, unsigned int speed)
-{
- stp_port_set_path_cost(p, (speed >= 10000 ? 2 /* 10 Gb/s. */
- : speed >= 1000 ? 4 /* 1 Gb/s. */
- : speed >= 100 ? 19 /* 100 Mb/s. */
- : speed >= 16 ? 62 /* 16 Mb/s. */
- : speed >= 10 ? 100 /* 10 Mb/s. */
- : speed >= 4 ? 250 /* 4 Mb/s. */
- : 19)); /* 100 Mb/s (guess). */
-}
-
-/* Enables topology change detection on port 'p'. */
-void
-stp_port_enable_change_detection(struct stp_port *p)
-{
- p->change_detection_enabled = true;
-}
-
-/* Disables topology change detection on port 'p'. */
-void
-stp_port_disable_change_detection(struct stp_port *p)
-{
- p->change_detection_enabled = false;
-}
-\f
-static void
-stp_transmit_config(struct stp_port *p)
-{
- struct stp *stp = p->stp;
- bool root = stp_is_root_bridge(stp);
- if (!root && !stp->root_port) {
- return;
- }
- if (p->hold_timer.active) {
- p->config_pending = true;
- } else {
- struct stp_config_bpdu config;
- memset(&config, 0, sizeof config);
- config.header.protocol_id = htons(STP_PROTOCOL_ID);
- config.header.protocol_version = STP_PROTOCOL_VERSION;
- config.header.bpdu_type = STP_TYPE_CONFIG;
- config.flags = 0;
- if (p->topology_change_ack) {
- config.flags |= htons(STP_CONFIG_TOPOLOGY_CHANGE_ACK);
- }
- if (stp->topology_change) {
- config.flags |= htons(STP_CONFIG_TOPOLOGY_CHANGE);
- }
- config.root_id = htonll(stp->designated_root);
- config.root_path_cost = htonl(stp->root_path_cost);
- config.bridge_id = htonll(stp->bridge_id);
- config.port_id = htons(p->port_id);
- if (root) {
- config.message_age = htons(0);
- } else {
- config.message_age = htons(stp->root_port->message_age_timer.value
- + MESSAGE_AGE_INCREMENT);
- }
- config.max_age = htons(stp->max_age);
- config.hello_time = htons(stp->hello_time);
- config.forward_delay = htons(stp->forward_delay);
- if (ntohs(config.message_age) < stp->max_age) {
- p->topology_change_ack = false;
- p->config_pending = false;
- stp_send_bpdu(p, &config, sizeof config);
- stp_start_timer(&p->hold_timer, 0);
- }
- }
-}
-
-static bool
-stp_supersedes_port_info(const struct stp_port *p,
- const struct stp_config_bpdu *config)
-{
- if (ntohll(config->root_id) != p->designated_root) {
- return ntohll(config->root_id) < p->designated_root;
- } else if (ntohl(config->root_path_cost) != p->designated_cost) {
- return ntohl(config->root_path_cost) < p->designated_cost;
- } else if (ntohll(config->bridge_id) != p->designated_bridge) {
- return ntohll(config->bridge_id) < p->designated_bridge;
- } else {
- return (ntohll(config->bridge_id) != p->stp->bridge_id
- || ntohs(config->port_id) <= p->designated_port);
- }
-}
-
-static void
-stp_record_config_information(struct stp_port *p,
- const struct stp_config_bpdu *config)
-{
- p->designated_root = ntohll(config->root_id);
- p->designated_cost = ntohl(config->root_path_cost);
- p->designated_bridge = ntohll(config->bridge_id);
- p->designated_port = ntohs(config->port_id);
- stp_start_timer(&p->message_age_timer, ntohs(config->message_age));
-}
-
-static void
-stp_record_config_timeout_values(struct stp *stp,
- const struct stp_config_bpdu *config)
-{
- stp->max_age = ntohs(config->max_age);
- stp->hello_time = ntohs(config->hello_time);
- stp->forward_delay = ntohs(config->forward_delay);
- stp->topology_change = config->flags & htons(STP_CONFIG_TOPOLOGY_CHANGE);
-}
-
-static bool
-stp_is_designated_port(const struct stp_port *p)
-{
- return (p->designated_bridge == p->stp->bridge_id
- && p->designated_port == p->port_id);
-}
-
-static void
-stp_config_bpdu_generation(struct stp *stp)
-{
- struct stp_port *p;
-
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (stp_is_designated_port(p)) {
- stp_transmit_config(p);
- }
- }
-}
-
-static void
-stp_transmit_tcn(struct stp *stp)
-{
- struct stp_port *p = stp->root_port;
- struct stp_tcn_bpdu tcn_bpdu;
- if (!p) {
- return;
- }
- tcn_bpdu.header.protocol_id = htons(STP_PROTOCOL_ID);
- tcn_bpdu.header.protocol_version = STP_PROTOCOL_VERSION;
- tcn_bpdu.header.bpdu_type = STP_TYPE_TCN;
- stp_send_bpdu(p, &tcn_bpdu, sizeof tcn_bpdu);
-}
-
-static void
-stp_configuration_update(struct stp *stp)
-{
- stp_root_selection(stp);
- stp_designated_port_selection(stp);
-}
-
-static bool
-stp_supersedes_root(const struct stp_port *root, const struct stp_port *p)
-{
- int p_cost = p->designated_cost + p->path_cost;
- int root_cost = root->designated_cost + root->path_cost;
-
- if (p->designated_root != root->designated_root) {
- return p->designated_root < root->designated_root;
- } else if (p_cost != root_cost) {
- return p_cost < root_cost;
- } else if (p->designated_bridge != root->designated_bridge) {
- return p->designated_bridge < root->designated_bridge;
- } else if (p->designated_port != root->designated_port) {
- return p->designated_port < root->designated_port;
- } else {
- return p->port_id < root->port_id;
- }
-}
-
-static void
-stp_root_selection(struct stp *stp)
-{
- struct stp_port *p, *root;
-
- root = NULL;
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (stp_is_designated_port(p)
- || p->designated_root >= stp->bridge_id) {
- continue;
- }
- if (root && !stp_supersedes_root(root, p)) {
- continue;
- }
- root = p;
- }
- stp->root_port = root;
- if (!root) {
- stp->designated_root = stp->bridge_id;
- stp->root_path_cost = 0;
- } else {
- stp->designated_root = root->designated_root;
- stp->root_path_cost = root->designated_cost + root->path_cost;
- }
-}
-
-static void
-stp_designated_port_selection(struct stp *stp)
-{
- struct stp_port *p;
-
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (stp_is_designated_port(p)
- || p->designated_root != stp->designated_root
- || stp->root_path_cost < p->designated_cost
- || (stp->root_path_cost == p->designated_cost
- && (stp->bridge_id < p->designated_bridge
- || (stp->bridge_id == p->designated_bridge
- && p->port_id <= p->designated_port))))
- {
- stp_become_designated_port(p);
- }
- }
-}
-
-static void
-stp_become_designated_port(struct stp_port *p)
-{
- struct stp *stp = p->stp;
- p->designated_root = stp->designated_root;
- p->designated_cost = stp->root_path_cost;
- p->designated_bridge = stp->bridge_id;
- p->designated_port = p->port_id;
-}
-
-static void
-stp_port_state_selection(struct stp *stp)
-{
- struct stp_port *p;
-
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (p == stp->root_port) {
- p->config_pending = false;
- p->topology_change_ack = false;
- stp_make_forwarding(p);
- } else if (stp_is_designated_port(p)) {
- stp_stop_timer(&p->message_age_timer);
- stp_make_forwarding(p);
- } else {
- p->config_pending = false;
- p->topology_change_ack = false;
- stp_make_blocking(p);
- }
- }
-}
-
-static void
-stp_make_forwarding(struct stp_port *p)
-{
- if (p->state == STP_BLOCKING) {
- stp_set_port_state(p, STP_LISTENING);
- stp_start_timer(&p->forward_delay_timer, 0);
- }
-}
-
-static void
-stp_make_blocking(struct stp_port *p)
-{
- if (!(p->state & (STP_DISABLED | STP_BLOCKING))) {
- if (p->state & (STP_FORWARDING | STP_LEARNING)) {
- if (p->change_detection_enabled) {
- stp_topology_change_detection(p->stp);
- }
- }
- stp_set_port_state(p, STP_BLOCKING);
- stp_stop_timer(&p->forward_delay_timer);
- }
-}
-
-static void
-stp_set_port_state(struct stp_port *p, enum stp_state state)
-{
- if (state != p->state && !p->state_changed) {
- p->state_changed = true;
- if (p < p->stp->first_changed_port) {
- p->stp->first_changed_port = p;
- }
- }
- p->state = state;
-}
-
-static void
-stp_topology_change_detection(struct stp *stp)
-{
- if (stp_is_root_bridge(stp)) {
- stp->topology_change = true;
- stp_start_timer(&stp->topology_change_timer, 0);
- } else if (!stp->topology_change_detected) {
- stp_transmit_tcn(stp);
- stp_start_timer(&stp->tcn_timer, 0);
- }
- stp->topology_change_detected = true;
-}
-
-static void
-stp_topology_change_acknowledged(struct stp *stp)
-{
- stp->topology_change_detected = false;
- stp_stop_timer(&stp->tcn_timer);
-}
-
-static void
-stp_acknowledge_topology_change(struct stp_port *p)
-{
- p->topology_change_ack = true;
- stp_transmit_config(p);
-}
-
-void
-stp_received_config_bpdu(struct stp *stp, struct stp_port *p,
- const struct stp_config_bpdu *config)
-{
- if (ntohs(config->message_age) >= ntohs(config->max_age)) {
- VLOG_WARN("%s: received config BPDU with message age (%u) greater "
- "than max age (%u)",
- stp->name,
- ntohs(config->message_age), ntohs(config->max_age));
- return;
- }
- if (p->state != STP_DISABLED) {
- bool root = stp_is_root_bridge(stp);
- if (stp_supersedes_port_info(p, config)) {
- stp_record_config_information(p, config);
- stp_configuration_update(stp);
- stp_port_state_selection(stp);
- if (!stp_is_root_bridge(stp) && root) {
- stp_stop_timer(&stp->hello_timer);
- if (stp->topology_change_detected) {
- stp_stop_timer(&stp->topology_change_timer);
- stp_transmit_tcn(stp);
- stp_start_timer(&stp->tcn_timer, 0);
- }
- }
- if (p == stp->root_port) {
- stp_record_config_timeout_values(stp, config);
- stp_config_bpdu_generation(stp);
- if (config->flags & htons(STP_CONFIG_TOPOLOGY_CHANGE_ACK)) {
- stp_topology_change_acknowledged(stp);
- }
- }
- } else if (stp_is_designated_port(p)) {
- stp_transmit_config(p);
- }
- }
-}
-
-void
-stp_received_tcn_bpdu(struct stp *stp, struct stp_port *p)
-{
- if (p->state != STP_DISABLED) {
- if (stp_is_designated_port(p)) {
- stp_topology_change_detection(stp);
- stp_acknowledge_topology_change(p);
- }
- }
-}
-
-static void
-stp_hello_timer_expiry(struct stp *stp)
-{
- stp_config_bpdu_generation(stp);
- stp_start_timer(&stp->hello_timer, 0);
-}
-
-static void
-stp_message_age_timer_expiry(struct stp_port *p)
-{
- struct stp *stp = p->stp;
- bool root = stp_is_root_bridge(stp);
- stp_become_designated_port(p);
- stp_configuration_update(stp);
- stp_port_state_selection(stp);
- if (stp_is_root_bridge(stp) && !root) {
- stp->max_age = stp->bridge_max_age;
- stp->hello_time = stp->bridge_hello_time;
- stp->forward_delay = stp->bridge_forward_delay;
- stp_topology_change_detection(stp);
- stp_stop_timer(&stp->tcn_timer);
- stp_config_bpdu_generation(stp);
- stp_start_timer(&stp->hello_timer, 0);
- }
-}
-
-static bool
-stp_is_designated_for_some_port(const struct stp *stp)
-{
- const struct stp_port *p;
-
- FOR_EACH_ENABLED_PORT (p, stp) {
- if (p->designated_bridge == stp->bridge_id) {
- return true;
- }
- }
- return false;
-}
-
-static void
-stp_forward_delay_timer_expiry(struct stp_port *p)
-{
- if (p->state == STP_LISTENING) {
- stp_set_port_state(p, STP_LEARNING);
- stp_start_timer(&p->forward_delay_timer, 0);
- } else if (p->state == STP_LEARNING) {
- stp_set_port_state(p, STP_FORWARDING);
- if (stp_is_designated_for_some_port(p->stp)) {
- if (p->change_detection_enabled) {
- stp_topology_change_detection(p->stp);
- }
- }
- }
-}
-
-static void
-stp_tcn_timer_expiry(struct stp *stp)
-{
- stp_transmit_tcn(stp);
- stp_start_timer(&stp->tcn_timer, 0);
-}
-
-static void
-stp_topology_change_timer_expiry(struct stp *stp)
-{
- stp->topology_change_detected = false;
- stp->topology_change = false;
-}
-
-static void
-stp_hold_timer_expiry(struct stp_port *p)
-{
- if (p->config_pending) {
- stp_transmit_config(p);
- }
-}
-
-static void
-stp_initialize_port(struct stp_port *p, enum stp_state state)
-{
- assert(state & (STP_DISABLED | STP_BLOCKING));
- stp_become_designated_port(p);
- stp_set_port_state(p, state);
- p->topology_change_ack = false;
- p->config_pending = false;
- p->change_detection_enabled = true;
- stp_stop_timer(&p->message_age_timer);
- stp_stop_timer(&p->forward_delay_timer);
- stp_stop_timer(&p->hold_timer);
-}
-
-static void
-stp_become_root_bridge(struct stp *stp)
-{
- stp->max_age = stp->bridge_max_age;
- stp->hello_time = stp->bridge_hello_time;
- stp->forward_delay = stp->bridge_forward_delay;
- stp_topology_change_detection(stp);
- stp_stop_timer(&stp->tcn_timer);
- stp_config_bpdu_generation(stp);
- stp_start_timer(&stp->hello_timer, 0);
-}
-
-static void
-stp_start_timer(struct stp_timer *timer, int value)
-{
- timer->value = value;
- timer->active = true;
-}
-
-static void
-stp_stop_timer(struct stp_timer *timer)
-{
- timer->active = false;
-}
-
-static bool
-stp_timer_expired(struct stp_timer *timer, int elapsed, int timeout)
-{
- if (timer->active) {
- timer->value += elapsed;
- if (timer->value >= timeout) {
- timer->active = false;
- return true;
- }
- }
- return false;
-}
-
-/* Returns the number of whole STP timer ticks in 'ms' milliseconds. There
- * are 256 STP timer ticks per second. */
-static int
-ms_to_timer(int ms)
-{
- return ms * 0x100 / 1000;
-}
-
-/* Returns the number of leftover milliseconds when 'ms' is converted to STP
- * timer ticks. */
-static int
-ms_to_timer_remainder(int ms)
-{
- return ms * 0x100 % 1000;
-}
-
-/* Returns the number of whole milliseconds in 'timer' STP timer ticks. There
- * are 256 STP timer ticks per second. */
-static int
-timer_to_ms(int timer)
-{
- return timer * 1000 / 0x100;
-}
-
-static int
-clamp(int x, int min, int max)
-{
- return x < min ? min : x > max ? max : x;
-}
-
-static void
-stp_update_bridge_timers(struct stp *stp)
-{
- int ht, ma, fd;
-
- ht = clamp(stp->rq_hello_time, 1000, 10000);
- ma = clamp(stp->rq_max_age, MAX(2 * (ht + 1000), 6000), 40000);
- fd = clamp(stp->rq_forward_delay, ma / 2 + 1000, 30000);
-
- stp->bridge_hello_time = ms_to_timer(ht);
- stp->bridge_max_age = ms_to_timer(ma);
- stp->bridge_forward_delay = ms_to_timer(fd);
-
- if (stp_is_root_bridge(stp)) {
- stp->max_age = stp->bridge_max_age;
- stp->hello_time = stp->bridge_hello_time;
- stp->forward_delay = stp->bridge_forward_delay;
- }
-}
-
-static void
-stp_send_bpdu(struct stp_port *p, const void *bpdu, size_t bpdu_size)
-{
- struct eth_header *eth;
- struct llc_header *llc;
- struct ofpbuf *pkt;
-
- /* Skeleton. */
- pkt = ofpbuf_new(ETH_HEADER_LEN + LLC_HEADER_LEN + bpdu_size);
- pkt->l2 = eth = ofpbuf_put_zeros(pkt, sizeof *eth);
- llc = ofpbuf_put_zeros(pkt, sizeof *llc);
- pkt->l3 = ofpbuf_put(pkt, bpdu, bpdu_size);
-
- /* 802.2 header. */
- memcpy(eth->eth_dst, stp_eth_addr, ETH_ADDR_LEN);
- /* p->stp->send_bpdu() must fill in source address. */
- 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;
-
- p->stp->send_bpdu(pkt, stp_port_no(p), p->stp->aux);
-}
+++ /dev/null
-/*
- * Copyright (c) 2008 Nicira Networks.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#ifndef STP_H
-#define STP_H 1
-
-/* This is an implementation of Spanning Tree Protocol as described in IEEE
- * 802.1D-1998, clauses 8 and 9. Section numbers refer to this standard. */
-
-#include <stdbool.h>
-#include <stdint.h>
-#include "compiler.h"
-#include "util.h"
-
-struct ofpbuf;
-
-/* Ethernet address used as the destination for STP frames. */
-extern const uint8_t stp_eth_addr[6];
-
-/* LLC field values used for STP frames. */
-#define STP_LLC_SSAP 0x42
-#define STP_LLC_DSAP 0x42
-#define STP_LLC_CNTL 0x03
-
-/* Bridge and port priorities that should be used by default. */
-#define STP_DEFAULT_BRIDGE_PRIORITY 32768
-#define STP_DEFAULT_PORT_PRIORITY 128
-
-/* Bridge identifier. Top 16 bits are a priority value (numerically lower
- * values are higher priorities). Bottom 48 bits are MAC address of bridge. */
-typedef uint64_t stp_identifier;
-
-/* Basic STP functionality. */
-#define STP_MAX_PORTS 255
-struct stp *stp_create(const char *name, stp_identifier bridge_id,
- void (*send_bpdu)(struct ofpbuf *bpdu, int port_no,
- void *aux),
- void *aux);
-void stp_destroy(struct stp *);
-void stp_tick(struct stp *, int ms);
-void stp_set_bridge_id(struct stp *, stp_identifier bridge_id);
-void stp_set_bridge_priority(struct stp *, uint16_t new_priority);
-void stp_set_hello_time(struct stp *, int ms);
-void stp_set_max_age(struct stp *, int ms);
-void stp_set_forward_delay(struct stp *, int ms);
-
-/* STP properties. */
-const char *stp_get_name(const struct stp *);
-stp_identifier stp_get_bridge_id(const struct stp *);
-stp_identifier stp_get_designated_root(const struct stp *);
-bool stp_is_root_bridge(const struct stp *);
-int stp_get_root_path_cost(const struct stp *);
-int stp_get_hello_time(const struct stp *);
-int stp_get_max_age(const struct stp *);
-int stp_get_forward_delay(const struct stp *);
-
-/* Obtaining STP ports. */
-struct stp_port *stp_get_port(struct stp *, int port_no);
-struct stp_port *stp_get_root_port(struct stp *);
-bool stp_get_changed_port(struct stp *, struct stp_port **portp);
-
-/* State of an STP port.
- *
- * A port is in exactly one state at any given time, but distinct bits are used
- * for states to allow testing for more than one state with a bit mask. */
-enum stp_state {
- STP_DISABLED = 1 << 0, /* 8.4.5: Disabled by management. */
- STP_LISTENING = 1 << 1, /* 8.4.2: Not learning or relaying frames. */
- STP_LEARNING = 1 << 2, /* 8.4.3: Learning but not relaying frames. */
- STP_FORWARDING = 1 << 3, /* 8.4.4: Learning and relaying frames. */
- STP_BLOCKING = 1 << 4 /* 8.4.1: Initial boot state. */
-};
-const char *stp_state_name(enum stp_state);
-bool stp_forward_in_state(enum stp_state);
-bool stp_learn_in_state(enum stp_state);
-
-void stp_received_bpdu(struct stp_port *, const void *bpdu, size_t bpdu_size);
-
-struct stp *stp_port_get_stp(struct stp_port *);
-int stp_port_no(const struct stp_port *);
-enum stp_state stp_port_get_state(const struct stp_port *);
-void stp_port_enable(struct stp_port *);
-void stp_port_disable(struct stp_port *);
-void stp_port_set_priority(struct stp_port *, uint8_t new_priority);
-void stp_port_set_path_cost(struct stp_port *, uint16_t path_cost);
-void stp_port_set_speed(struct stp_port *, unsigned int speed);
-void stp_port_enable_change_detection(struct stp_port *);
-void stp_port_disable_change_detection(struct stp_port *);
-
-#endif /* stp.h */
VLOG_MODULE(reconnect)
VLOG_MODULE(rtnetlink)
VLOG_MODULE(sflow)
-VLOG_MODULE(stp)
VLOG_MODULE(stream_fd)
VLOG_MODULE(stream_ssl)
VLOG_MODULE(stream_tcp)
#include "rconn.h"
#include "shash.h"
#include "status.h"
-#include "stp.h"
#include "stream-ssl.h"
#include "svec.h"
#include "tag.h"
}
}
-int
-ofproto_set_stp(struct ofproto *ofproto OVS_UNUSED, bool enable_stp)
-{
- /* XXX */
- if (enable_stp) {
- VLOG_WARN("STP is not yet implemented");
- return EINVAL;
- } else {
- return 0;
- }
-}
-
uint64_t
ofproto_get_datapath_id(const struct ofproto *ofproto)
{
port = port_array_get(&ctx->ofproto->ports, ctx->flow.in_port);
if (port && port->opp.config & (OFPPC_NO_RECV | OFPPC_NO_RECV_STP) &&
- port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, stp_eth_addr)
+ port->opp.config & (eth_addr_equals(ctx->flow.dl_dst, eth_addr_stp)
? OFPPC_NO_RECV_STP : OFPPC_NO_RECV)) {
/* Drop this flow. */
return;
int ofproto_set_netflow(struct ofproto *,
const struct netflow_options *nf_options);
void ofproto_set_sflow(struct ofproto *, const struct ofproto_sflow_options *);
-int ofproto_set_stp(struct ofproto *, bool enable_stp);
/* Configuration querying. */
uint64_t ofproto_get_datapath_id(const struct ofproto *);
/test-reconnect
/test-timeval
/test-sha1
-/test-stp
/test-type-props
/test-uuid
/test-vconn
tests/ovsdb-server.at \
tests/ovsdb-monitor.at \
tests/ovsdb-idl.at \
- tests/stp.at \
tests/ovs-vsctl.at \
tests/interface-reconfigure.at
TESTSUITE = $(srcdir)/tests/testsuite
tests/lcov/test-ovsdb \
tests/lcov/test-reconnect \
tests/lcov/test-sha1 \
- tests/lcov/test-stp \
tests/lcov/test-timeval \
tests/lcov/test-type-props \
tests/lcov/test-uuid \
tests/valgrind/test-ovsdb \
tests/valgrind/test-reconnect \
tests/valgrind/test-sha1 \
- tests/valgrind/test-stp \
tests/valgrind/test-timeval \
tests/valgrind/test-type-props \
tests/valgrind/test-uuid \
tests_test_dhcp_client_SOURCES = tests/test-dhcp-client.c
tests_test_dhcp_client_LDADD = lib/libopenvswitch.a
-noinst_PROGRAMS += tests/test-stp
-tests_test_stp_SOURCES = tests/test-stp.c
-tests_test_stp_LDADD = lib/libopenvswitch.a
-
noinst_PROGRAMS += tests/test-uuid
tests_test_uuid_SOURCES = tests/test-uuid.c
tests_test_uuid_LDADD = lib/libopenvswitch.a
+++ /dev/null
-AT_BANNER([Spanning Tree Protocol unit tests])
-
-AT_SETUP([STP example from IEEE 802.1D-1998])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-ieee802.1d-1998],
-[bridge 0 0x42 = a b
-bridge 1 0x97 = c:5 a d:5
-bridge 2 0x45 = b e
-bridge 3 0x57 = b:5 e:5
-bridge 4 0x83 = a:5 e:5
-run 1000
-check 0 = root
-check 1 = F F:10 F
-check 2 = F:10 B
-check 3 = F:5 F
-check 4 = F:5 B
-])
-AT_CHECK([test-stp test-stp-ieee802.1d-1998])
-AT_CLEANUP
-
-AT_SETUP([STP example from IEEE 802.1D-2004 figures 17.4 and 17.5])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-ieee802.1d-2004-fig17.4],
-[bridge 0 0x111 = a b e c
-bridge 1 0x222 = a b d f
-bridge 2 0x333 = c d l j h g
-bridge 3 0x444 = e f n m k i
-bridge 4 0x555 = g i 0 0
-bridge 5 0x666 = h k 0 0
-bridge 6 0x777 = j m 0 0
-bridge 7 0x888 = l n 0 0
-run 1000
-check 0 = root
-check 1 = F:10 B F F
-check 2 = F:10 B F F F F
-check 3 = F:10 B F F F F
-check 4 = F:20 B F F
-check 5 = F:20 B F F
-check 6 = F:20 B F F
-check 7 = F:20 B F F
-
-# Now connect two ports of bridge 7 to the same LAN.
-bridge 7 = l n o o
-# Same results except for bridge 7:
-run 1000
-check 0 = root
-check 1 = F:10 B F F
-check 2 = F:10 B F F F F
-check 3 = F:10 B F F F F
-check 4 = F:20 B F F
-check 5 = F:20 B F F
-check 6 = F:20 B F F
-check 7 = F:20 B F B
-])
-AT_CHECK([test-stp test-stp-ieee802.1d-2004-fig17.4])
-AT_CLEANUP
-
-AT_SETUP([STP example from IEEE 802.1D-2004 figure 17.6])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-ieee802.1d-2004-fig17.6],
-[bridge 0 0x111 = a b l
-bridge 1 0x222 = b c d
-bridge 2 0x333 = d e f
-bridge 3 0x444 = f g h
-bridge 4 0x555 = j h i
-bridge 5 0x666 = l j k
-run 1000
-check 0 = root
-check 1 = F:10 F F
-check 2 = F:20 F F
-check 3 = F:30 F B
-check 4 = F:20 F F
-check 5 = F:10 F F
-])
-AT_CHECK([test-stp test-stp-ieee802.1d-2004-fig17.6])
-AT_CLEANUP
-
-AT_SETUP([STP example from IEEE 802.1D-2004 figure 17.7])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-ieee802.1d-2004-fig17.7],
-[bridge 0 0xaa = b
-bridge 1 0x111 = a b d f h g e c
-bridge 2 0x222 = g h j l n m k i
-run 1000
-check 0 = root
-check 1 = F F:10 F F F F F F
-check 2 = B F:20 F F F F F F
-
-# This is not the port priority change described in that figure,
-# but I don't understand what port priority change would cause
-# that change.
-bridge 2 = g X j l n m k i
-run 1000
-check 0 = root
-check 1 = F F:10 F F F F F F
-check 2 = F:20 D F F F F F F
-])
-AT_CHECK([test-stp test-stp-ieee802.1d-2004-fig17.7])
-AT_CLEANUP
-
-AT_SETUP([STP.io.1.1: Link Failure])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-io-1.1],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Interoperability Test Suite
-# Version 1.5":
-#
-# STP.io.1.1: Link Failure
-bridge 0 0x111 = a b c
-bridge 1 0x222 = a b c
-run 1000
-check 0 = root
-check 1 = F:10 B B
-bridge 1 = 0 _ _
-run 1000
-check 0 = root
-check 1 = F F:10 B
-bridge 1 = X _ _
-run 1000
-check 0 = root
-check 1 = D F:10 B
-bridge 1 = _ 0 _
-run 1000
-check 0 = root
-check 1 = D F F:10
-bridge 1 = _ X _
-run 1000
-check 0 = root
-check 1 = D D F:10
-])
-AT_CHECK([test-stp test-stp-iol-io-1.1])
-AT_CLEANUP
-
-AT_SETUP([STP.io.1.2: Repeated Network])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-io-1.2],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Interoperability Test Suite
-# Version 1.5":
-# STP.io.1.2: Repeated Network
-bridge 0 0x111 = a a
-bridge 1 0x222 = a a
-run 1000
-check 0 = rootid:0x111 F B
-check 1 = rootid:0x111 F:10 B
-bridge 1 = a^0x90 _
-run 1000
-check 0 = rootid:0x111 F B
-check 1 = rootid:0x111 B F:10
-])
-AT_CHECK([test-stp test-stp-iol-io-1.2])
-AT_CLEANUP
-
-AT_SETUP([STP.io.1.4: Network Initialization])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-io-1.4],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Interoperability Test Suite
-# Version 1.5":
-# STP.io.1.4: Network Initialization
-bridge 0 0x111 = a b c
-bridge 1 0x222 = b d e
-bridge 2 0x333 = a d f
-bridge 3 0x444 = c e f
-run 1000
-check 0 = root
-check 1 = F:10 F F
-check 2 = F:10 B F
-check 3 = F:10 B B
-])
-AT_CHECK([test-stp test-stp-iol-io-1.4])
-AT_CLEANUP
-
-AT_SETUP([STP.io.1.5: Topology Change])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-io-1.5],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Interoperability Test Suite
-# Version 1.5":
-# STP.io.1.5: Topology Change
-bridge 0 0x111 = a b d c
-bridge 1 0x222 = a b f e
-bridge 2 0x333 = c d g h
-bridge 3 0x444 = e f g h
-run 1000
-check 0 = root
-check 1 = F:10 B F F
-check 2 = B F:10 F F
-check 3 = B F:20 B B
-bridge 1^0x7000
-run 1000
-check 0 = F:10 B F F
-check 1 = root
-check 2 = B F:20 B B
-check 3 = B F:10 F F
-bridge 2^0x6000
-run 1000
-check 0 = F F B F:10
-check 1 = F:20 B B B
-check 2 = root
-check 3 = F F F:10 B
-bridge 3^0x5000
-run 1000
-check 0 = B B B F:20
-check 1 = F F B F:10
-check 2 = F F F:10 B
-check 3 = root
-bridge 0^0x4000
-bridge 1^0x4001
-bridge 2^0x4002
-bridge 3^0x4003
-run 1000
-check 0 = root
-check 1 = F:10 B F F
-check 2 = B F:10 F F
-check 3 = B F:20 B B
-])
-AT_CHECK([test-stp test-stp-iol-io-1.5])
-AT_CLEANUP
-
-AT_SETUP([STP.op.1.1 and STP.op.1.2])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-op-1.1],
-[# This test file approximates the following tests from "Bridge
-# Functions Consortium Spanning Tree Protocol Operations Test Suite
-# Version 2.3":
-# Test STP.op.1.1: Root ID Initialized to Bridge ID
-# Test STP.op.1.2: Root Path Cost Initialized to Zero
-bridge 0 0x123 =
-check 0 = root
-])
-AT_CHECK([test-stp test-stp-iol-op-1.1])
-AT_CLEANUP
-
-AT_SETUP([STP.op.1.4: All Ports Initialized to Designated Ports])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-op-1.4],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Protocol Operations Test Suite
-# Version 2.3":
-# Test STP.op.1.4: All Ports Initialized to Designated Ports
-bridge 0 0x123 = a b c d e f
-check 0 = Li Li Li Li Li Li
-run 1000
-check 0 = F F F F F F
-])
-AT_CHECK([test-stp test-stp-iol-op-1.4])
-AT_CLEANUP
-
-AT_SETUP([STP.op.3.1: Root Bridge Selection: Root ID Values])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-op-3.1],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Protocol Operations Test Suite
-# Version 2.3":
-# Test STP.op.3.1: Root Bridge Selection: Root ID Values
-bridge 0 0x111 = a
-bridge 1 0x222 = a
-check 0 = rootid:0x111 Li
-check 1 = rootid:0x222 Li
-run 1000
-check 0 = rootid:0x111 root
-check 1 = rootid:0x111 F:10
-])
-AT_CHECK([test-stp test-stp-iol-op-3.1])
-AT_CLEANUP
-
-AT_SETUP([STP.op.3.3: Root Bridge Selection: Bridge ID Values])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-op-3.3],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Protocol Operations Test Suite
-# Version 2.3":
-# Test STP.op.3.3: Root Bridge Selection: Bridge ID Values
-bridge 0 0x333^0x6000 = a
-bridge 1 0x222^0x7000 = b
-bridge 2 0x111 = a b
-run 1000
-check 0 = rootid:0x333^0x6000 root
-check 1 = rootid:0x333^0x6000 F:20
-check 2 = rootid:0x333^0x6000 F:10 F
-])
-AT_CHECK([test-stp test-stp-iol-op-3.3])
-AT_CLEANUP
-
-AT_SETUP([STP.op.3.3: Root Bridge Selection: Bridge ID Values])
-AT_KEYWORDS([STP])
-AT_DATA([test-stp-iol-op-3.4],
-[# This test file approximates the following test from "Bridge
-# Functions Consortium Spanning Tree Protocol Operations Test Suite
-# Version 2.3":
-# Test STP.op.3.3: Root Bridge Selection: Bridge ID Values
-bridge 0 0x333^0x6000 = a
-bridge 1 0x222^0x7000 = b
-bridge 2 0x111 = a b
-run 1000
-check 0 = rootid:0x333^0x6000 root
-check 1 = rootid:0x333^0x6000 F:20
-check 2 = rootid:0x333^0x6000 F:10 F
-])
-AT_CHECK([test-stp test-stp-iol-op-3.4])
-AT_CLEANUP
-
+++ /dev/null
-/*
- * Copyright (c) 2008, 2009, 2010 Nicira Networks.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include <config.h>
-
-#include "stp.h"
-#include <assert.h>
-#include <ctype.h>
-#include <errno.h>
-#include <inttypes.h>
-#include <stdarg.h>
-#include <stdlib.h>
-#include "ofpbuf.h"
-#include "packets.h"
-
-struct bpdu {
- int port_no;
- void *data;
- size_t size;
-};
-
-struct bridge {
- struct test_case *tc;
- int id;
- bool reached;
-
- struct stp *stp;
-
- struct lan *ports[STP_MAX_PORTS];
- int n_ports;
-
-#define RXQ_SIZE 16
- struct bpdu rxq[RXQ_SIZE];
- int rxq_head, rxq_tail;
-};
-
-struct lan_conn {
- struct bridge *bridge;
- int port_no;
-};
-
-struct lan {
- struct test_case *tc;
- const char *name;
- bool reached;
- struct lan_conn conns[16];
- int n_conns;
-};
-
-struct test_case {
- struct bridge *bridges[16];
- int n_bridges;
- struct lan *lans[26];
- int n_lans;
-};
-
-static const char *file_name;
-static int line_number;
-static char line[128];
-static char *pos, *token;
-static int n_warnings;
-
-static struct test_case *
-new_test_case(void)
-{
- struct test_case *tc = xmalloc(sizeof *tc);
- tc->n_bridges = 0;
- tc->n_lans = 0;
- return tc;
-}
-
-static void
-send_bpdu(struct ofpbuf *pkt, int port_no, void *b_)
-{
- struct bridge *b = b_;
- struct lan *lan;
-
- assert(port_no < b->n_ports);
- lan = b->ports[port_no];
- if (lan) {
- const void *data = pkt->l3;
- size_t size = (char *) ofpbuf_tail(pkt) - (char *) data;
- int i;
-
- for (i = 0; i < lan->n_conns; i++) {
- struct lan_conn *conn = &lan->conns[i];
- if (conn->bridge != b || conn->port_no != port_no) {
- struct bridge *dst = conn->bridge;
- struct bpdu *bpdu = &dst->rxq[dst->rxq_head++ % RXQ_SIZE];
- assert(dst->rxq_head - dst->rxq_tail <= RXQ_SIZE);
- bpdu->data = xmemdup(data, size);
- bpdu->size = size;
- bpdu->port_no = conn->port_no;
- }
- }
- }
- ofpbuf_delete(pkt);
-}
-
-static struct bridge *
-new_bridge(struct test_case *tc, int id)
-{
- struct bridge *b = xmalloc(sizeof *b);
- char name[16];
- b->tc = tc;
- b->id = id;
- snprintf(name, sizeof name, "stp%x", id);
- b->stp = stp_create(name, id, send_bpdu, b);
- assert(tc->n_bridges < ARRAY_SIZE(tc->bridges));
- b->n_ports = 0;
- b->rxq_head = b->rxq_tail = 0;
- tc->bridges[tc->n_bridges++] = b;
- return b;
-}
-
-static struct lan *
-new_lan(struct test_case *tc, const char *name)
-{
- struct lan *lan = xmalloc(sizeof *lan);
- lan->tc = tc;
- lan->name = xstrdup(name);
- lan->n_conns = 0;
- assert(tc->n_lans < ARRAY_SIZE(tc->lans));
- tc->lans[tc->n_lans++] = lan;
- return lan;
-}
-
-static void
-reconnect_port(struct bridge *b, int port_no, struct lan *new_lan)
-{
- struct lan *old_lan;
- int j;
-
- assert(port_no < b->n_ports);
- old_lan = b->ports[port_no];
- if (old_lan == new_lan) {
- return;
- }
-
- /* Disconnect from old_lan. */
- if (old_lan) {
- for (j = 0; j < old_lan->n_conns; j++) {
- struct lan_conn *c = &old_lan->conns[j];
- if (c->bridge == b && c->port_no == port_no) {
- memmove(c, c + 1, sizeof *c * (old_lan->n_conns - j - 1));
- old_lan->n_conns--;
- break;
- }
- }
- }
-
- /* Connect to new_lan. */
- b->ports[port_no] = new_lan;
- if (new_lan) {
- int conn_no = new_lan->n_conns++;
- assert(conn_no < ARRAY_SIZE(new_lan->conns));
- new_lan->conns[conn_no].bridge = b;
- new_lan->conns[conn_no].port_no = port_no;
- }
-}
-
-static void
-new_port(struct bridge *b, struct lan *lan, int path_cost)
-{
- int port_no = b->n_ports++;
- struct stp_port *p = stp_get_port(b->stp, port_no);
- assert(port_no < ARRAY_SIZE(b->ports));
- b->ports[port_no] = NULL;
- stp_port_set_path_cost(p, path_cost);
- stp_port_enable(p);
- reconnect_port(b, port_no, lan);
-}
-
-static void
-dump(struct test_case *tc)
-{
- int i;
-
- for (i = 0; i < tc->n_bridges; i++) {
- struct bridge *b = tc->bridges[i];
- struct stp *stp = b->stp;
- int j;
-
- printf("%s:", stp_get_name(stp));
- if (stp_is_root_bridge(stp)) {
- printf(" root");
- }
- printf("\n");
- for (j = 0; j < b->n_ports; j++) {
- struct stp_port *p = stp_get_port(stp, j);
- enum stp_state state = stp_port_get_state(p);
-
- printf("\tport %d", j);
- if (b->ports[j]) {
- printf(" (lan %s)", b->ports[j]->name);
- } else {
- printf(" (disconnected)");
- }
- printf(": %s", stp_state_name(state));
- if (p == stp_get_root_port(stp)) {
- printf(" (root port, root_path_cost=%u)", stp_get_root_path_cost(stp));
- }
- printf("\n");
- }
- }
-}
-
-static void dump_lan_tree(struct test_case *, struct lan *, int level);
-
-static void
-dump_bridge_tree(struct test_case *tc, struct bridge *b, int level)
-{
- int i;
-
- if (b->reached) {
- return;
- }
- b->reached = true;
- for (i = 0; i < level; i++) {
- printf("\t");
- }
- printf("%s\n", stp_get_name(b->stp));
- for (i = 0; i < b->n_ports; i++) {
- struct lan *lan = b->ports[i];
- struct stp_port *p = stp_get_port(b->stp, i);
- if (stp_port_get_state(p) == STP_FORWARDING && lan) {
- dump_lan_tree(tc, lan, level + 1);
- }
- }
-}
-
-static void
-dump_lan_tree(struct test_case *tc, struct lan *lan, int level)
-{
- int i;
-
- if (lan->reached) {
- return;
- }
- lan->reached = true;
- for (i = 0; i < level; i++) {
- printf("\t");
- }
- printf("%s\n", lan->name);
- for (i = 0; i < lan->n_conns; i++) {
- struct bridge *b = lan->conns[i].bridge;
- dump_bridge_tree(tc, b, level + 1);
- }
-}
-
-static void
-tree(struct test_case *tc)
-{
- int i;
-
- for (i = 0; i < tc->n_bridges; i++) {
- struct bridge *b = tc->bridges[i];
- b->reached = false;
- }
- for (i = 0; i < tc->n_lans; i++) {
- struct lan *lan = tc->lans[i];
- lan->reached = false;
- }
- for (i = 0; i < tc->n_bridges; i++) {
- struct bridge *b = tc->bridges[i];
- struct stp *stp = b->stp;
- if (stp_is_root_bridge(stp)) {
- dump_bridge_tree(tc, b, 0);
- }
- }
-}
-
-static void
-simulate(struct test_case *tc, int granularity)
-{
- int time;
-
- for (time = 0; time < 1000 * 180; time += granularity) {
- int round_trips;
- int i;
-
- for (i = 0; i < tc->n_bridges; i++) {
- stp_tick(tc->bridges[i]->stp, granularity);
- }
- for (round_trips = 0; round_trips < granularity; round_trips++) {
- bool any = false;
- for (i = 0; i < tc->n_bridges; i++) {
- struct bridge *b = tc->bridges[i];
- for (; b->rxq_tail != b->rxq_head; b->rxq_tail++) {
- struct bpdu *bpdu = &b->rxq[b->rxq_tail % RXQ_SIZE];
- stp_received_bpdu(stp_get_port(b->stp, bpdu->port_no),
- bpdu->data, bpdu->size);
- free(bpdu->data);
- any = true;
- }
- }
- if (!any) {
- break;
- }
- }
- }
-}
-
-static void
-err(const char *message, ...)
- PRINTF_FORMAT(1, 2)
- NO_RETURN;
-
-static void
-err(const char *message, ...)
-{
- va_list args;
-
- fprintf(stderr, "%s:%d:%td: ", file_name, line_number, pos - line);
- va_start(args, message);
- vfprintf(stderr, message, args);
- va_end(args);
- putc('\n', stderr);
-
- exit(EXIT_FAILURE);
-}
-
-static void
-warn(const char *message, ...)
- PRINTF_FORMAT(1, 2);
-
-static void
-warn(const char *message, ...)
-{
- va_list args;
-
- fprintf(stderr, "%s:%d: ", file_name, line_number);
- va_start(args, message);
- vfprintf(stderr, message, args);
- va_end(args);
- putc('\n', stderr);
-
- n_warnings++;
-}
-
-static bool
-get_token(void)
-{
- char *start;
-
- while (isspace((unsigned char) *pos)) {
- pos++;
- }
- if (*pos == '\0') {
- free(token);
- token = NULL;
- return false;
- }
-
- start = pos;
- if (isalpha((unsigned char) *pos)) {
- while (isalpha((unsigned char) *++pos)) {
- continue;
- }
- } else if (isdigit((unsigned char) *pos)) {
- if (*pos == '0' && (pos[1] == 'x' || pos[1] == 'X')) {
- pos += 2;
- while (isxdigit((unsigned char) *pos)) {
- pos++;
- }
- } else {
- while (isdigit((unsigned char) *++pos)) {
- continue;
- }
- }
- } else {
- pos++;
- }
-
- free(token);
- token = xmemdup0(start, pos - start);
- return true;
-}
-
-static bool
-get_int(int *intp)
-{
- char *save_pos = pos;
- if (token && isdigit((unsigned char) *token)) {
- *intp = strtol(token, NULL, 0);
- get_token();
- return true;
- } else {
- pos = save_pos;
- return false;
- }
-}
-
-static bool
-match(const char *want)
-{
- if (token && !strcmp(want, token)) {
- get_token();
- return true;
- } else {
- return false;
- }
-}
-
-static int
-must_get_int(void)
-{
- int x;
- if (!get_int(&x)) {
- err("expected integer");
- }
- return x;
-}
-
-static void
-must_match(const char *want)
-{
- if (!match(want)) {
- err("expected \"%s\"", want);
- }
-}
-
-int
-main(int argc, char *argv[])
-{
- struct test_case *tc;
- FILE *input_file;
- int i;
-
- if (argc != 2) {
- ovs_fatal(0, "usage: test-stp INPUT.STP\n");
- }
- file_name = argv[1];
-
- input_file = fopen(file_name, "r");
- if (!input_file) {
- ovs_fatal(errno, "error opening \"%s\"", file_name);
- }
-
- tc = new_test_case();
- for (i = 0; i < 26; i++) {
- char name[2];
- name[0] = 'a' + i;
- name[1] = '\0';
- new_lan(tc, name);
- }
-
- for (line_number = 1; fgets(line, sizeof line, input_file);
- line_number++)
- {
- char *newline, *hash;
-
- newline = strchr(line, '\n');
- if (newline) {
- *newline = '\0';
- }
- hash = strchr(line, '#');
- if (hash) {
- *hash = '\0';
- }
-
- pos = line;
- if (!get_token()) {
- continue;
- }
- if (match("bridge")) {
- struct bridge *bridge;
- int bridge_no, port_no;
-
- bridge_no = must_get_int();
- if (bridge_no < tc->n_bridges) {
- bridge = tc->bridges[bridge_no];
- } else if (bridge_no == tc->n_bridges) {
- bridge = new_bridge(tc, must_get_int());
- } else {
- err("bridges must be numbered consecutively from 0");
- }
- if (match("^")) {
- stp_set_bridge_priority(bridge->stp, must_get_int());
- }
-
- if (match("=")) {
- for (port_no = 0; port_no < STP_MAX_PORTS; port_no++) {
- struct stp_port *p = stp_get_port(bridge->stp, port_no);
- if (!token || match("X")) {
- stp_port_disable(p);
- } else if (match("_")) {
- /* Nothing to do. */
- } else {
- struct lan *lan;
- int path_cost;
-
- if (!strcmp(token, "0")) {
- lan = NULL;
- } else if (strlen(token) == 1
- && islower((unsigned char)*token)) {
- lan = tc->lans[*token - 'a'];
- } else {
- err("%s is not a valid LAN name "
- "(0 or a lowercase letter)", token);
- }
- get_token();
-
- path_cost = match(":") ? must_get_int() : 10;
- if (port_no < bridge->n_ports) {
- stp_port_set_path_cost(p, path_cost);
- stp_port_enable(p);
- reconnect_port(bridge, port_no, lan);
- } else if (port_no == bridge->n_ports) {
- new_port(bridge, lan, path_cost);
- } else {
- err("ports must be numbered consecutively");
- }
- if (match("^")) {
- stp_port_set_priority(p, must_get_int());
- }
- }
- }
- }
- } else if (match("run")) {
- simulate(tc, must_get_int());
- } else if (match("dump")) {
- dump(tc);
- } else if (match("tree")) {
- tree(tc);
- } else if (match("check")) {
- struct bridge *b;
- struct stp *stp;
- int bridge_no, port_no;
-
- bridge_no = must_get_int();
- if (bridge_no >= tc->n_bridges) {
- err("no bridge numbered %d", bridge_no);
- }
- b = tc->bridges[bridge_no];
- stp = b->stp;
-
- must_match("=");
-
- if (match("rootid")) {
- uint64_t rootid;
- must_match(":");
- rootid = must_get_int();
- if (match("^")) {
- rootid |= (uint64_t) must_get_int() << 48;
- } else {
- rootid |= UINT64_C(0x8000) << 48;
- }
- if (stp_get_designated_root(stp) != rootid) {
- warn("%s: root %"PRIx64", not %"PRIx64,
- stp_get_name(stp), stp_get_designated_root(stp),
- rootid);
- }
- }
-
- if (match("root")) {
- if (stp_get_root_path_cost(stp)) {
- warn("%s: root path cost of root is %u but should be 0",
- stp_get_name(stp), stp_get_root_path_cost(stp));
- }
- if (!stp_is_root_bridge(stp)) {
- warn("%s: root is %"PRIx64", not %"PRIx64,
- stp_get_name(stp),
- stp_get_designated_root(stp), stp_get_bridge_id(stp));
- }
- for (port_no = 0; port_no < b->n_ports; port_no++) {
- struct stp_port *p = stp_get_port(stp, port_no);
- enum stp_state state = stp_port_get_state(p);
- if (!(state & (STP_DISABLED | STP_FORWARDING))) {
- warn("%s: root port %d in state %s",
- stp_get_name(b->stp), port_no,
- stp_state_name(state));
- }
- }
- } else {
- for (port_no = 0; port_no < STP_MAX_PORTS; port_no++) {
- struct stp_port *p = stp_get_port(stp, port_no);
- enum stp_state state;
- if (token == NULL || match("D")) {
- state = STP_DISABLED;
- } else if (match("B")) {
- state = STP_BLOCKING;
- } else if (match("Li")) {
- state = STP_LISTENING;
- } else if (match("Le")) {
- state = STP_LEARNING;
- } else if (match("F")) {
- state = STP_FORWARDING;
- } else if (match("_")) {
- continue;
- } else {
- err("unknown port state %s", token);
- }
- if (stp_port_get_state(p) != state) {
- warn("%s port %d: state is %s but should be %s",
- stp_get_name(stp), port_no,
- stp_state_name(stp_port_get_state(p)),
- stp_state_name(state));
- }
- if (state == STP_FORWARDING) {
- struct stp_port *root_port = stp_get_root_port(stp);
- if (match(":")) {
- int root_path_cost = must_get_int();
- if (p != root_port) {
- warn("%s: port %d is not the root port",
- stp_get_name(stp), port_no);
- if (!root_port) {
- warn("%s: (there is no root port)",
- stp_get_name(stp));
- } else {
- warn("%s: (port %d is the root port)",
- stp_get_name(stp),
- stp_port_no(root_port));
- }
- } else if (root_path_cost
- != stp_get_root_path_cost(stp)) {
- warn("%s: root path cost is %u, should be %d",
- stp_get_name(stp),
- stp_get_root_path_cost(stp),
- root_path_cost);
- }
- } else if (p == root_port) {
- warn("%s: port %d is the root port but "
- "not expected to be",
- stp_get_name(stp), port_no);
- }
- }
- }
- }
- if (n_warnings) {
- exit(EXIT_FAILURE);
- }
- }
- if (get_token()) {
- err("trailing garbage on line");
- }
- }
- free(token);
-
- for (i = 0; i < tc->n_lans; i++) {
- struct lan *lan = tc->lans[i];
- free((char *) lan->name);
- free(lan);
- }
- for (i = 0; i < tc->n_bridges; i++) {
- struct bridge *bridge = tc->bridges[i];
- stp_destroy(bridge->stp);
- free(bridge);
- }
- free(tc);
-
- return 0;
-}
m4_include([tests/lockfile.at])
m4_include([tests/reconnect.at])
m4_include([tests/ovsdb.at])
-m4_include([tests/stp.at])
m4_include([tests/ovs-vsctl.at])
m4_include([tests/interface-reconfigure.at])
}
for (i = 0; i < n_switches; i++) {
struct switch_ *this = &switches[i];
- lswitch_run(this->lswitch, this->rconn);
+ lswitch_run(this->lswitch);
}
unixctl_server_run(unixctl);
/* Failure behavior. */
int max_idle; /* Idle time for flows in fail-open mode. */
- /* Spanning tree protocol. */
- bool enable_stp;
-
/* NetFlow. */
struct svec netflow; /* NetFlow targets. */
};
if (error) {
ovs_fatal(error, "failed to configure NetFlow collectors");
}
- error = ofproto_set_stp(ofproto, s.enable_stp);
- if (error) {
- ovs_fatal(error, "failed to configure STP");
- }
ofproto_set_controllers(ofproto, s.controllers, s.n_controllers);
ofproto_set_fail_mode(ofproto, s.fail_mode);
OPT_RATE_LIMIT,
OPT_BURST_LIMIT,
OPT_BOOTSTRAP_CA_CERT,
- OPT_STP,
- OPT_NO_STP,
OPT_OUT_OF_BAND,
OPT_IN_BAND,
OPT_NETFLOW,
{"snoop", required_argument, 0, OPT_SNOOP},
{"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},
{"netflow", required_argument, 0, OPT_NETFLOW},
svec_init(&controllers);
svec_init(&s->snoops);
s->max_idle = 0;
- s->enable_stp = false;
svec_init(&s->netflow);
svec_init(&s->ports);
for (;;) {
}
break;
- case OPT_STP:
- s->enable_stp = true;
- break;
-
- case OPT_NO_STP:
- s->enable_stp = false;
- break;
-
case OPT_OUT_OF_BAND:
controller_opts.band = OFPROTO_OUT_OF_BAND;
break;
projects / openvswitch / commitdiff