/*
- * 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 "pktbuf.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? */
+ bool invalid_ttl_to_controller; /* Send packets with invalid TTL
+ to the controller. */
/* Asynchronous flow table operation support. */
struct list opgroups; /* Contains pending "ofopgroups", if any. */
* requests. */
#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? */
};
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 *);
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++;
}
}
ofconn->role = role;
}
+void
+ofconn_set_invalid_ttl_to_controller(struct ofconn *ofconn, bool val)
+{
+ ofconn->invalid_ttl_to_controller = val;
+}
+
+bool
+ofconn_get_invalid_ttl_to_controller(struct ofconn *ofconn)
+{
+ return ofconn->invalid_ttl_to_controller;
+}
+
/* 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.
*
}
}
-/* 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)
{
+ 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();
}
static void
/* Returns true if 'ofconn' should receive asynchronous messages. */
static bool
-ofconn_receives_async_msgs(const struct ofconn *ofconn)
+ofconn_receives_async_msgs__(const struct ofconn *ofconn)
{
- if (!rconn_is_connected(ofconn->rconn)) {
- return false;
- } else if (ofconn->type == OFCONN_PRIMARY) {
+ if (ofconn->type == OFCONN_PRIMARY) {
/* Primary controllers always get asynchronous messages unless they
* have configured themselves as "slaves". */
return ofconn->role != NX_ROLE_SLAVE;
}
}
+static bool
+ofconn_receives_async_msgs(const struct ofconn *ofconn)
+{
+ if (!rconn_is_connected(ofconn->rconn)) {
+ return false;
+ } else {
+ return ofconn_receives_async_msgs__(ofconn);
+ }
+}
+
+static bool
+ofconn_interested_in_packet(const struct ofconn *ofconn,
+ const struct ofputil_packet_in *pin)
+{
+ if (!rconn_is_connected(ofconn->rconn)) {
+ return false;
+ } else if (pin->reason == OFPR_INVALID_TTL) {
+ return ofconn->invalid_ttl_to_controller;
+ } else {
+ return ofconn_receives_async_msgs__(ofconn);
+ }
+}
+
/* Returns a human-readable name for an OpenFlow connection between 'mgr' and
* 'target', suitable for use in log messages for identifying the connection.
*
/* 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'. */
}
/* 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_interested_in_packet(ofconn, pin)) {
+ 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
projects / openvswitch / blobdiff