/*
- * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira Networks.
+ * Copyright (c) 2008, 2009, 2010, 2011, 2012 Nicira, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include "fatal-signal.h"
#include "flow.h"
#include "ofp-errors.h"
+#include "ofp-msgs.h"
#include "ofp-print.h"
#include "ofp-util.h"
#include "ofpbuf.h"
#include "random.h"
#include "util.h"
#include "vlog.h"
+#include "socket-util.h"
VLOG_DEFINE_THIS_MODULE(vconn);
*
* The vconn will automatically negotiate an OpenFlow protocol version
* acceptable to both peers on the connection. The version negotiated will be
- * no lower than 'min_version' and no higher than OFP_VERSION.
+ * no lower than 'min_version' and no higher than OFP10_VERSION.
*
* Returns 0 if successful, otherwise a positive errno value. If successful,
* stores a pointer to the new connection in '*vconnp', otherwise a null
* pointer. */
int
-vconn_open(const char *name, int min_version, struct vconn **vconnp)
+vconn_open(const char *name, int min_version, struct vconn **vconnp,
+ uint8_t dscp)
{
struct vconn_class *class;
struct vconn *vconn;
/* Call class's "open" function. */
suffix_copy = xstrdup(strchr(name, ':') + 1);
- error = class->open(name, suffix_copy, &vconn);
+ error = class->open(name, suffix_copy, &vconn, dscp);
free(suffix_copy);
if (error) {
goto error;
fatal_signal_run();
- error = vconn_open(name, min_version, &vconn);
+ error = vconn_open(name, min_version, &vconn, DSCP_DEFAULT);
if (!error) {
while ((error = vconn_connect(vconn)) == EAGAIN) {
vconn_run(vconn);
struct ofpbuf *b;
int retval;
- make_openflow(sizeof(struct ofp_header), OFPT_HELLO, &b);
+ b = ofpraw_alloc(OFPRAW_OFPT_HELLO, OFP10_VERSION, 0);
retval = do_send(vconn, b);
if (!retval) {
vconn->state = VCS_RECV_HELLO;
retval = do_recv(vconn, &b);
if (!retval) {
- struct ofp_header *oh = b->data;
+ const struct ofp_header *oh = b->data;
+ enum ofptype type;
+ enum ofperr error;
- if (oh->type == OFPT_HELLO) {
+ error = ofptype_decode(&type, b->data);
+ if (!error && type == OFPTYPE_HELLO) {
if (b->size > sizeof *oh) {
struct ds msg = DS_EMPTY_INITIALIZER;
ds_put_format(&msg, "%s: extra-long hello:\n", vconn->name);
ds_destroy(&msg);
}
- vconn->version = MIN(OFP_VERSION, oh->version);
+ vconn->version = MIN(OFP10_VERSION, oh->version);
if (vconn->version < vconn->min_version) {
VLOG_WARN_RL(&bad_ofmsg_rl,
"%s: version negotiation failed: we support "
"versions 0x%02x to 0x%02x inclusive but peer "
"supports no later than version 0x%02"PRIx8,
- vconn->name, vconn->min_version, OFP_VERSION,
+ vconn->name, vconn->min_version, OFP10_VERSION,
oh->version);
vconn->state = VCS_SEND_ERROR;
} else {
"(we support versions 0x%02x to 0x%02x inclusive, "
"peer no later than version 0x%02"PRIx8")",
vconn->name, vconn->version, vconn->min_version,
- OFP_VERSION, oh->version);
+ OFP10_VERSION, oh->version);
vconn->state = VCS_CONNECTED;
}
ofpbuf_delete(b);
snprintf(s, sizeof s, "We support versions 0x%02x to 0x%02x inclusive but "
"you support no later than version 0x%02"PRIx8".",
- vconn->min_version, OFP_VERSION, vconn->version);
+ vconn->min_version, OFP10_VERSION, vconn->version);
b = ofperr_encode_hello(OFPERR_OFPHFC_INCOMPATIBLE,
ofperr_domain_from_version(vconn->version), s);
retval = do_send(vconn, b);
int
vconn_recv(struct vconn *vconn, struct ofpbuf **msgp)
{
- int retval = vconn_connect(vconn);
+ struct ofpbuf *msg;
+ int retval;
+
+ retval = vconn_connect(vconn);
+ if (!retval) {
+ retval = do_recv(vconn, &msg);
+ }
if (!retval) {
- retval = do_recv(vconn, msgp);
+ const struct ofp_header *oh = msg->data;
+ if (oh->version != vconn->version) {
+ enum ofptype type;
+
+ if (ofptype_decode(&type, msg->data)
+ || (type != OFPTYPE_HELLO &&
+ type != OFPTYPE_ERROR &&
+ type != OFPTYPE_ECHO_REQUEST &&
+ type != OFPTYPE_ECHO_REPLY)) {
+ VLOG_ERR_RL(&bad_ofmsg_rl, "%s: received OpenFlow version "
+ "0x%02"PRIx8" != expected %02x",
+ vconn->name, oh->version, vconn->version);
+ ofpbuf_delete(msg);
+ retval = EPROTO;
+ }
+ }
}
+
+ *msgp = retval ? NULL : msg;
return retval;
}
{
int retval = (vconn->class->recv)(vconn, msgp);
if (!retval) {
- struct ofp_header *oh;
-
COVERAGE_INC(vconn_received);
if (VLOG_IS_DBG_ENABLED()) {
char *s = ofp_to_string((*msgp)->data, (*msgp)->size, 1);
VLOG_DBG_RL(&ofmsg_rl, "%s: received: %s", vconn->name, s);
free(s);
}
-
- oh = ofpbuf_at_assert(*msgp, 0, sizeof *oh);
- if ((oh->version != vconn->version || oh->version == 0)
- && oh->type != OFPT_HELLO
- && oh->type != OFPT_ERROR
- && oh->type != OFPT_ECHO_REQUEST
- && oh->type != OFPT_ECHO_REPLY
- && oh->type != OFPT_VENDOR)
- {
- if (vconn->version == 0) {
- VLOG_ERR_RL(&bad_ofmsg_rl,
- "%s: received OpenFlow message type %"PRIu8" "
- "before version negotiation complete",
- vconn->name, oh->type);
- } else {
- VLOG_ERR_RL(&bad_ofmsg_rl,
- "%s: received OpenFlow version 0x%02"PRIx8" "
- "!= expected %02x",
- vconn->name, oh->version, vconn->version);
- }
- ofpbuf_delete(*msgp);
- retval = EPROTO;
- }
- }
- if (retval) {
- *msgp = NULL;
}
return retval;
}
int retval;
assert(msg->size >= sizeof(struct ofp_header));
- assert(((struct ofp_header *) msg->data)->length == htons(msg->size));
+
+ ofpmsg_update_length(msg);
if (!VLOG_IS_DBG_ENABLED()) {
COVERAGE_INC(vconn_sent);
retval = (vconn->class->send)(vconn, msg);
* stores a pointer to the new connection in '*pvconnp', otherwise a null
* pointer. */
int
-pvconn_open(const char *name, struct pvconn **pvconnp)
+pvconn_open(const char *name, struct pvconn **pvconnp, uint8_t dscp)
{
struct pvconn_class *class;
struct pvconn *pvconn;
/* Call class's "open" function. */
suffix_copy = xstrdup(strchr(name, ':') + 1);
- error = class->listen(name, suffix_copy, &pvconn);
+ error = class->listen(name, suffix_copy, &pvconn, dscp);
free(suffix_copy);
if (error) {
goto error;
*
* The new vconn will automatically negotiate an OpenFlow protocol version
* acceptable to both peers on the connection. The version negotiated will be
- * no lower than 'min_version' and no higher than OFP_VERSION.
+ * no lower than 'min_version' and no higher than OFP10_VERSION.
*
* pvconn_accept() will not block waiting for a connection. If no connection
* is ready to be accepted, it returns EAGAIN immediately. */
projects / openvswitch / blobdiff