/*
- * Copyright (c) 2009, 2010, 2011 Nicira Networks.
+ * Copyright (c) 2009, 2010, 2011, 2012 Nicira Networks.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "odp-util.h"
#include "ofp-util.h"
#include "ofpbuf.h"
+#include "ofproto-provider.h"
#include "pinsched.h"
#include "poll-loop.h"
#include "pktbuf.h"
-#include "private.h"
#include "rconn.h"
#include "shash.h"
+#include "stream.h"
#include "timeval.h"
#include "vconn.h"
#include "vlog.h"
/* An OpenFlow connection. */
struct ofconn {
- struct connmgr *connmgr; /* Connection's manager. */
+/* Configuration that persists from one connection to the next. */
+
struct list node; /* In struct connmgr's "all_conns" list. */
+ struct hmap_node hmap_node; /* In struct connmgr's "controllers" map. */
+
+ struct connmgr *connmgr; /* Connection's manager. */
struct rconn *rconn; /* OpenFlow connection. */
enum ofconn_type type; /* Type. */
+ enum ofproto_band band; /* In-band or out-of-band? */
+
+/* State that should be cleared from one connection to the next. */
+
+ /* OpenFlow state. */
+ enum nx_role role; /* Role. */
enum nx_flow_format flow_format; /* Currently selected flow format. */
+ enum nx_packet_in_format packet_in_format; /* OFPT_PACKET_IN format. */
bool flow_mod_table_id; /* NXT_FLOW_MOD_TABLE_ID enabled? */
/* Asynchronous flow table operation support. */
#define OFCONN_REPLY_MAX 100
struct rconn_packet_counter *reply_counter;
- /* type == OFCONN_PRIMARY only. */
- enum nx_role role; /* Role. */
- struct hmap_node hmap_node; /* In struct connmgr's "controllers" map. */
- enum ofproto_band band; /* In-band or out-of-band? */
+ /* Asynchronous message configuration in each possible roles.
+ *
+ * A 1-bit enables sending an asynchronous message for one possible reason
+ * that the message might be generated, a 0-bit disables it. */
+ uint32_t master_async_config[OAM_N_TYPES]; /* master, other */
+ uint32_t slave_async_config[OAM_N_TYPES]; /* slave */
};
static struct ofconn *ofconn_create(struct connmgr *, struct rconn *,
enum ofconn_type);
static void ofconn_destroy(struct ofconn *);
+static void ofconn_flush(struct ofconn *);
static void ofconn_reconfigure(struct ofconn *,
const struct ofproto_controller *);
static void ofconn_set_rate_limit(struct ofconn *, int rate, int burst);
-static bool ofconn_receives_async_msgs(const struct ofconn *);
-
static void ofconn_send(const struct ofconn *, struct ofpbuf *,
struct rconn_packet_counter *);
/* In-band control. */
struct in_band *in_band;
- long long int next_in_band_update;
struct sockaddr_in *extra_in_band_remotes;
size_t n_extra_remotes;
int in_band_queue;
mgr->fail_mode = OFPROTO_FAIL_SECURE;
mgr->in_band = NULL;
- mgr->next_in_band_update = LLONG_MAX;
mgr->extra_in_band_remotes = NULL;
mgr->n_extra_remotes = 0;
mgr->in_band_queue = -1;
size_t i;
if (handle_openflow && mgr->in_band) {
- if (time_msec() >= mgr->next_in_band_update) {
- update_in_band_remotes(mgr);
+ if (!in_band_run(mgr->in_band)) {
+ in_band_destroy(mgr->in_band);
+ mgr->in_band = NULL;
}
- in_band_run(mgr->in_band);
}
LIST_FOR_EACH_SAFE (ofconn, next_ofconn, node, &mgr->all_conns) {
ofconn_wait(ofconn, handling_openflow);
}
if (handling_openflow && mgr->in_band) {
- poll_timer_wait_until(mgr->next_in_band_update);
in_band_wait(mgr->in_band);
}
if (handling_openflow && mgr->fail_open) {
}
}
+void
+connmgr_free_controller_info(struct shash *info)
+{
+ struct shash_node *node;
+
+ SHASH_FOR_EACH (node, info) {
+ struct ofproto_controller_info *cinfo = node->data;
+ while (cinfo->pairs.n) {
+ free((char *) cinfo->pairs.values[--cinfo->pairs.n]);
+ }
+ free(cinfo);
+ }
+ shash_destroy(info);
+}
+
/* Changes 'mgr''s set of controllers to the 'n_controllers' controllers in
* 'controllers'. */
void
ofconn = ofconn_create(mgr, rconn_create(5, 8), OFCONN_PRIMARY);
ofconn->pktbuf = pktbuf_create();
- ofconn->miss_send_len = OFP_DEFAULT_MISS_SEND_LEN;
rconn_connect(ofconn->rconn, target, name);
hmap_insert(&mgr->controllers, &ofconn->hmap_node, hash_string(target, 0));
/* Add all the remotes. */
HMAP_FOR_EACH (ofconn, hmap_node, &mgr->controllers) {
struct sockaddr_in *sin = &addrs[n_addrs];
+ const char *target = rconn_get_target(ofconn->rconn);
if (ofconn->band == OFPROTO_OUT_OF_BAND) {
continue;
}
- sin->sin_addr.s_addr = rconn_get_remote_ip(ofconn->rconn);
- if (sin->sin_addr.s_addr) {
- sin->sin_port = rconn_get_remote_port(ofconn->rconn);
+ if (stream_parse_target_with_default_ports(target,
+ OFP_TCP_PORT,
+ OFP_SSL_PORT,
+ sin)) {
n_addrs++;
}
}
if (!mgr->in_band) {
in_band_create(mgr->ofproto, mgr->local_port_name, &mgr->in_band);
}
- if (mgr->in_band) {
- in_band_set_remotes(mgr->in_band, addrs, n_addrs);
- }
in_band_set_queue(mgr->in_band, mgr->in_band_queue);
- mgr->next_in_band_update = time_msec() + 1000;
} else {
- in_band_destroy(mgr->in_band);
- mgr->in_band = NULL;
+ /* in_band_run() needs a chance to delete any existing in-band flows.
+ * We will destroy mgr->in_band after it's done with that. */
+ }
+ if (mgr->in_band) {
+ in_band_set_remotes(mgr->in_band, addrs, n_addrs);
}
/* Clean up. */
ofconn->role = role;
}
+void
+ofconn_set_invalid_ttl_to_controller(struct ofconn *ofconn, bool enable)
+{
+ uint32_t bit = 1u << OFPR_INVALID_TTL;
+ if (enable) {
+ ofconn->master_async_config[OAM_PACKET_IN] |= bit;
+ } else {
+ ofconn->master_async_config[OAM_PACKET_IN] &= ~bit;
+ }
+}
+
+bool
+ofconn_get_invalid_ttl_to_controller(struct ofconn *ofconn)
+{
+ uint32_t bit = 1u << OFPR_INVALID_TTL;
+ return (ofconn->master_async_config[OAM_PACKET_IN] & bit) != 0;
+}
+
/* Returns the currently configured flow format for 'ofconn', one of NXFF_*.
*
* The default, if no other format has been set, is NXFF_OPENFLOW10. */
ofconn->flow_format = flow_format;
}
+/* Returns the currently configured packet in format for 'ofconn', one of
+ * NXPIF_*.
+ *
+ * The default, if no other format has been set, is NXPIF_OPENFLOW10. */
+enum nx_packet_in_format
+ofconn_get_packet_in_format(struct ofconn *ofconn)
+{
+ return ofconn->packet_in_format;
+}
+
+/* Sets the packet in format for 'ofconn' to 'packet_in_format' (one of
+ * NXPIF_*). */
+void
+ofconn_set_packet_in_format(struct ofconn *ofconn,
+ enum nx_packet_in_format packet_in_format)
+{
+ ofconn->packet_in_format = packet_in_format;
+}
+
/* Returns true if the NXT_FLOW_MOD_TABLE_ID extension is enabled, false
* otherwise.
*
ofconn->miss_send_len = miss_send_len;
}
+void
+ofconn_set_async_config(struct ofconn *ofconn,
+ const uint32_t master_masks[OAM_N_TYPES],
+ const uint32_t slave_masks[OAM_N_TYPES])
+{
+ size_t size = sizeof ofconn->master_async_config;
+ memcpy(ofconn->master_async_config, master_masks, size);
+ memcpy(ofconn->slave_async_config, slave_masks, size);
+}
+
/* Sends 'msg' on 'ofconn', accounting it as a reply. (If there is a
* sufficient number of OpenFlow replies in-flight on a single ofconn, then the
* connmgr will stop accepting new OpenFlow requests on that ofconn until the
}
}
-/* Sends 'error', which should be an OpenFlow error created with
- * e.g. ofp_mkerr(), on 'ofconn', as a reply to 'request'. Only at most the
+/* Sends 'error' on 'ofconn', as a reply to 'request'. Only at most the
* first 64 bytes of 'request' are used. */
void
ofconn_send_error(const struct ofconn *ofconn,
- const struct ofp_header *request, int error)
+ const struct ofp_header *request, enum ofperr error)
{
- struct ofpbuf *msg = ofputil_encode_error_msg(error, request);
- if (msg) {
- ofconn_send_reply(ofconn, msg);
+ struct ofpbuf *reply;
+
+ reply = ofperr_encode_reply(error, request);
+ if (reply) {
+ static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10);
+
+ if (!VLOG_DROP_INFO(&err_rl)) {
+ const struct ofputil_msg_type *type;
+ const char *type_name;
+ size_t request_len;
+
+ request_len = ntohs(request->length);
+ type_name = (!ofputil_decode_msg_type_partial(request,
+ MIN(64, request_len),
+ &type)
+ ? ofputil_msg_type_name(type)
+ : "invalid");
+
+ VLOG_INFO("%s: sending %s error reply to %s message",
+ rconn_get_name(ofconn->rconn), ofperr_to_string(error),
+ type_name);
+ }
+ ofconn_send_reply(ofconn, reply);
}
}
/* Same as pktbuf_retrieve(), using the pktbuf owned by 'ofconn'. */
-int
+enum ofperr
ofconn_pktbuf_retrieve(struct ofconn *ofconn, uint32_t id,
struct ofpbuf **bufferp, uint16_t *in_port)
{
return !list_is_empty(&ofconn->opgroups);
}
-/* Returns the number of pending opgroups on 'ofconn'. */
-size_t
-ofconn_n_pending_opgroups(const struct ofconn *ofconn)
-{
- return list_size(&ofconn->opgroups);
-}
-
/* Adds 'ofconn_node' to 'ofconn''s list of pending opgroups.
*
* If 'ofconn' is destroyed or its connection drops, then 'ofconn' will remove
static struct ofconn *
ofconn_create(struct connmgr *mgr, struct rconn *rconn, enum ofconn_type type)
{
- struct ofconn *ofconn = xzalloc(sizeof *ofconn);
+ struct ofconn *ofconn;
+
+ ofconn = xzalloc(sizeof *ofconn);
ofconn->connmgr = mgr;
list_push_back(&mgr->all_conns, &ofconn->node);
ofconn->rconn = rconn;
ofconn->type = type;
- ofconn->flow_format = NXFF_OPENFLOW10;
- ofconn->flow_mod_table_id = false;
+
list_init(&ofconn->opgroups);
- ofconn->role = NX_ROLE_OTHER;
- ofconn->packet_in_counter = rconn_packet_counter_create ();
- ofconn->pktbuf = NULL;
- ofconn->miss_send_len = 0;
- ofconn->reply_counter = rconn_packet_counter_create ();
+
+ ofconn_flush(ofconn);
+
return ofconn;
}
-/* Disassociates 'ofconn' from all of the ofopgroups that it initiated that
- * have not yet completed. (Those ofopgroups will still run to completion in
- * the usual way, but any errors that they run into will not be reported on any
- * OpenFlow channel.)
- *
- * Also discards any blocked operation on 'ofconn'. */
+/* Clears all of the state in 'ofconn' that should not persist from one
+ * connection to the next. */
static void
ofconn_flush(struct ofconn *ofconn)
{
+ uint32_t *master = ofconn->master_async_config;
+ uint32_t *slave = ofconn->slave_async_config;
+ int i;
+
+ ofconn->role = NX_ROLE_OTHER;
+ ofconn->flow_format = NXFF_OPENFLOW10;
+ ofconn->packet_in_format = NXPIF_OPENFLOW10;
+ ofconn->flow_mod_table_id = false;
+
+ /* Disassociate 'ofconn' from all of the ofopgroups that it initiated that
+ * have not yet completed. (Those ofopgroups will still run to completion
+ * in the usual way, but any errors that they run into will not be reported
+ * on any OpenFlow channel.)
+ *
+ * Also discard any blocked operation on 'ofconn'. */
while (!list_is_empty(&ofconn->opgroups)) {
list_init(list_pop_front(&ofconn->opgroups));
}
ofpbuf_delete(ofconn->blocked);
ofconn->blocked = NULL;
+
+ rconn_packet_counter_destroy(ofconn->packet_in_counter);
+ ofconn->packet_in_counter = rconn_packet_counter_create();
+ for (i = 0; i < N_SCHEDULERS; i++) {
+ if (ofconn->schedulers[i]) {
+ int rate, burst;
+
+ pinsched_get_limits(ofconn->schedulers[i], &rate, &burst);
+ pinsched_destroy(ofconn->schedulers[i]);
+ ofconn->schedulers[i] = pinsched_create(rate, burst);
+ }
+ }
+ if (ofconn->pktbuf) {
+ pktbuf_destroy(ofconn->pktbuf);
+ ofconn->pktbuf = pktbuf_create();
+ }
+ ofconn->miss_send_len = (ofconn->type == OFCONN_PRIMARY
+ ? OFP_DEFAULT_MISS_SEND_LEN
+ : 0);
+
+ rconn_packet_counter_destroy(ofconn->reply_counter);
+ ofconn->reply_counter = rconn_packet_counter_create();
+
+ /* "master" and "other" roles get all asynchronous messages by default,
+ * except that the controller needs to enable nonstandard "packet-in"
+ * reasons itself. */
+ master[OAM_PACKET_IN] = (1u << OFPR_NO_MATCH) | (1u << OFPR_ACTION);
+ master[OAM_PORT_STATUS] = ((1u << OFPPR_ADD)
+ | (1u << OFPPR_DELETE)
+ | (1u << OFPPR_MODIFY));
+ master[OAM_FLOW_REMOVED] = ((1u << OFPRR_IDLE_TIMEOUT)
+ | (1u << OFPRR_HARD_TIMEOUT)
+ | (1u << OFPRR_DELETE));
+
+ /* "slave" role gets port status updates by default. */
+ slave[OAM_PACKET_IN] = 0;
+ slave[OAM_PORT_STATUS] = ((1u << OFPPR_ADD)
+ | (1u << OFPPR_DELETE)
+ | (1u << OFPPR_MODIFY));
+ slave[OAM_FLOW_REMOVED] = 0;
}
static void
}
}
-/* Returns true if 'ofconn' should receive asynchronous messages. */
+/* Returns true if 'ofconn' should receive asynchronous messages of the given
+ * OAM_* 'type' and 'reason', which should be a OFPR_* value for OAM_PACKET_IN,
+ * a OFPPR_* value for OAM_PORT_STATUS, or an OFPRR_* value for
+ * OAM_FLOW_REMOVED. Returns false if the message should not be sent on
+ * 'ofconn'. */
static bool
-ofconn_receives_async_msgs(const struct ofconn *ofconn)
+ofconn_receives_async_msg(const struct ofconn *ofconn,
+ enum ofconn_async_msg_type type,
+ unsigned int reason)
{
+ const uint32_t *async_config;
+
+ assert(reason < 32);
+ assert((unsigned int) type < OAM_N_TYPES);
+
if (!rconn_is_connected(ofconn->rconn)) {
return false;
- } else if (ofconn->type == OFCONN_PRIMARY) {
- /* Primary controllers always get asynchronous messages unless they
- * have configured themselves as "slaves". */
- return ofconn->role != NX_ROLE_SLAVE;
- } else {
+ }
+
+ /* Keep the following code in sync with the documentation in the
+ * "Asynchronous Messages" section in DESIGN. */
+
+ if (ofconn->type == OFCONN_SERVICE && !ofconn->miss_send_len) {
/* Service connections don't get asynchronous messages unless they have
* explicitly asked for them by setting a nonzero miss send length. */
- return ofconn->miss_send_len > 0;
+ return false;
}
+
+ async_config = (ofconn->role == NX_ROLE_SLAVE
+ ? ofconn->slave_async_config
+ : ofconn->master_async_config);
+ if (!(async_config[type] & (1u << reason))) {
+ return false;
+ }
+
+ return true;
}
/* Returns a human-readable name for an OpenFlow connection between 'mgr' and
/* Sending asynchronous messages. */
static void schedule_packet_in(struct ofconn *, struct ofputil_packet_in,
- const struct flow *, struct ofpbuf *rw_packet);
+ const struct flow *);
/* Sends an OFPT_PORT_STATUS message with 'opp' and 'reason' to appropriate
* controllers managed by 'mgr'. */
struct ofconn *ofconn;
LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
- struct ofp_port_status *ops;
- struct ofpbuf *b;
-
- /* Primary controllers, even slaves, should always get port status
- updates. Otherwise obey ofconn_receives_async_msgs(). */
- if (ofconn->type != OFCONN_PRIMARY
- && !ofconn_receives_async_msgs(ofconn)) {
- continue;
+ if (ofconn_receives_async_msg(ofconn, OAM_PORT_STATUS, reason)) {
+ struct ofp_port_status *ops;
+ struct ofpbuf *b;
+
+ ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
+ ops->reason = reason;
+ ops->desc = *opp;
+ ofconn_send(ofconn, b, NULL);
}
-
- ops = make_openflow_xid(sizeof *ops, OFPT_PORT_STATUS, 0, &b);
- ops->reason = reason;
- ops->desc = *opp;
- ofconn_send(ofconn, b, NULL);
}
}
struct ofconn *ofconn;
LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
- struct ofpbuf *msg;
-
- if (!ofconn_receives_async_msgs(ofconn)) {
- continue;
+ if (ofconn_receives_async_msg(ofconn, OAM_FLOW_REMOVED, fr->reason)) {
+ struct ofpbuf *msg;
+
+ /* Account flow expirations as replies to OpenFlow requests. That
+ * works because preventing OpenFlow requests from being processed
+ * also prevents new flows from being added (and expiring). (It
+ * also prevents processing OpenFlow requests that would not add
+ * new flows, so it is imperfect.) */
+ msg = ofputil_encode_flow_removed(fr, ofconn->flow_format);
+ ofconn_send_reply(ofconn, msg);
}
-
- /* Account flow expirations as replies to OpenFlow requests. That
- * works because preventing OpenFlow requests from being processed also
- * prevents new flows from being added (and expiring). (It also
- * prevents processing OpenFlow requests that would not add new flows,
- * so it is imperfect.) */
- msg = ofputil_encode_flow_removed(fr, ofconn->flow_format);
- ofconn_send_reply(ofconn, msg);
}
}
/* Given 'pin', sends an OFPT_PACKET_IN message to each OpenFlow controller as
- * necessary according to their individual configurations.
- *
- * 'rw_packet' may be NULL. Otherwise, 'rw_packet' must contain the same data
- * as pin->packet. (rw_packet == pin->packet is also valid.) Ownership of
- * 'rw_packet' is transferred to this function. */
+ * necessary according to their individual configurations. */
void
connmgr_send_packet_in(struct connmgr *mgr,
const struct ofputil_packet_in *pin,
- const struct flow *flow, struct ofpbuf *rw_packet)
+ const struct flow *flow)
{
- struct ofconn *ofconn, *prev;
+ struct ofconn *ofconn;
- prev = NULL;
LIST_FOR_EACH (ofconn, node, &mgr->all_conns) {
- if (ofconn_receives_async_msgs(ofconn)) {
- if (prev) {
- schedule_packet_in(prev, *pin, flow, NULL);
- }
- prev = ofconn;
+ if (ofconn_receives_async_msg(ofconn, OAM_PACKET_IN, pin->reason)) {
+ schedule_packet_in(ofconn, *pin, flow);
}
}
- if (prev) {
- schedule_packet_in(prev, *pin, flow, rw_packet);
- } else {
- ofpbuf_delete(rw_packet);
- }
}
/* pinsched callback for sending 'ofp_packet_in' on 'ofconn'. */
/* Takes 'pin', whose packet has the flow specified by 'flow', composes an
* OpenFlow packet-in message from it, and passes it to 'ofconn''s packet
- * scheduler for sending.
- *
- * 'rw_packet' may be NULL. Otherwise, 'rw_packet' must contain the same data
- * as pin->packet. (rw_packet == pin->packet is also valid.) Ownership of
- * 'rw_packet' is transferred to this function. */
+ * scheduler for sending. */
static void
schedule_packet_in(struct ofconn *ofconn, struct ofputil_packet_in pin,
- const struct flow *flow, struct ofpbuf *rw_packet)
+ const struct flow *flow)
{
struct connmgr *mgr = ofconn->connmgr;
} else if (!ofconn->pktbuf) {
pin.buffer_id = UINT32_MAX;
} else {
- pin.buffer_id = pktbuf_save(ofconn->pktbuf, pin.packet, flow->in_port);
+ pin.buffer_id = pktbuf_save(ofconn->pktbuf, pin.packet, pin.packet_len,
+ flow->in_port);
}
/* Figure out how much of the packet to send. */
if (pin.reason == OFPR_NO_MATCH) {
- pin.send_len = pin.packet->size;
+ pin.send_len = pin.packet_len;
} else {
/* Caller should have initialized 'send_len' to 'max_len' specified in
* struct ofp_action_output. */
* immediately call into do_send_packet_in() or it might buffer it for a
* while (until a later call to pinsched_run()). */
pinsched_send(ofconn->schedulers[pin.reason == OFPR_NO_MATCH ? 0 : 1],
- flow->in_port, ofputil_encode_packet_in(&pin, rw_packet),
+ flow->in_port,
+ ofputil_encode_packet_in(&pin, ofconn->packet_in_format),
do_send_packet_in, ofconn);
}
\f
git://git.onelab.eu / sliver-openvswitch.git / blobdiff