* derivatives without specific, written prior permission.
*/
-#include "vconn.h"
+#include <config.h>
+#include "vconn-provider.h"
#include <assert.h>
#include <errno.h>
+#include <inttypes.h>
#include <netinet/in.h>
#include <poll.h>
#include <stdlib.h>
#include <string.h>
-#include "buffer.h"
#include "flow.h"
#include "ofp-print.h"
+#include "ofpbuf.h"
#include "openflow.h"
#include "poll-loop.h"
#include "random.h"
&ssl_vconn_class,
&pssl_vconn_class,
#endif
+ &unix_vconn_class,
+ &punix_vconn_class,
};
+/* High rate limit because most of the rate-limiting here is individual
+ * OpenFlow messages going over the vconn. If those are enabled then we
+ * really need to see them. */
+static struct vlog_rate_limit rl = VLOG_RATE_LIMIT_INIT(600, 600);
+
/* Check the validity of the vconn class structures. */
static void
check_vconn_classes(void)
struct vconn_class *class = vconn_classes[i];
assert(class->name != NULL);
assert(class->open != NULL);
- assert(class->close != NULL);
- assert(class->accept
- ? !class->recv && !class->send
- : class->recv && class->send);
- assert(class->wait != NULL);
+ if (class->close || class->accept || class->recv || class->send
+ || class->wait) {
+ assert(class->close != NULL);
+ assert(class->accept
+ ? !class->recv && !class->send
+ : class->recv && class->send);
+ assert(class->wait != NULL);
+ } else {
+ /* This class delegates to another one. */
+ }
}
#endif
}
printf(" ssl:HOST[:PORT] "
"SSL PORT (default: %d) on remote HOST\n", OFP_SSL_PORT);
#endif
+ printf(" unix:FILE Unix domain socket named FILE\n");
}
if (passive) {
"listen for SSL on PORT (default: %d)\n",
OFP_SSL_PORT);
#endif
+ printf(" punix:FILE "
+ "listen on Unix domain socket FILE\n");
}
#ifdef HAVE_OPENSSL
check_vconn_classes();
+ *vconnp = NULL;
prefix_len = strcspn(name, ":");
if (prefix_len == strlen(name)) {
- fatal(0, "`%s' not correct format for peer name", name);
+ error(0, "`%s' not correct format for peer name", name);
+ return EAFNOSUPPORT;
}
for (i = 0; i < ARRAY_SIZE(vconn_classes); i++) {
struct vconn_class *class = vconn_classes[i];
if (strlen(class->name) == prefix_len
&& !memcmp(class->name, name, prefix_len)) {
+ struct vconn *vconn;
char *suffix_copy = xstrdup(name + prefix_len + 1);
- int retval = class->open(name, suffix_copy, vconnp);
+ int retval = class->open(name, suffix_copy, &vconn);
free(suffix_copy);
- if (retval) {
- *vconnp = NULL;
- } else {
- assert((*vconnp)->connect_status != EAGAIN
- || (*vconnp)->class->connect);
+ if (!retval) {
+ assert(vconn->connect_status != EAGAIN
+ || vconn->class->connect);
+ vconn->name = xstrdup(name);
+ *vconnp = vconn;
}
return retval;
}
}
- fatal(0, "unknown peer type `%.*s'", (int) prefix_len, name);
- abort();
+ error(0, "unknown peer type `%.*s'", (int) prefix_len, name);
+ return EAFNOSUPPORT;
}
int
vconn_close(struct vconn *vconn)
{
if (vconn != NULL) {
+ char *name = vconn->name;
(vconn->class->close)(vconn);
+ free(name);
}
}
/* Tries to receive an OpenFlow message from 'vconn', which must be an active
* vconn. If successful, stores the received message into '*msgp' and returns
* 0. The caller is responsible for destroying the message with
- * buffer_delete(). On failure, returns a positive errno value and stores a
+ * ofpbuf_delete(). On failure, returns a positive errno value and stores a
* null pointer into '*msgp'. On normal connection close, returns EOF.
*
* vconn_recv will not block waiting for a packet to arrive. If no packets
* have been received, it returns EAGAIN immediately. */
int
-vconn_recv(struct vconn *vconn, struct buffer **msgp)
+vconn_recv(struct vconn *vconn, struct ofpbuf **msgp)
{
int retval = vconn_connect(vconn);
if (!retval) {
retval = (vconn->class->recv)(vconn, msgp);
- if (VLOG_IS_DBG_ENABLED() && !retval) {
- char *s = ofp_to_string((*msgp)->data, (*msgp)->size, 1);
- VLOG_DBG("received: %s", s);
- free(s);
+ if (!retval) {
+ struct ofp_header *oh;
+
+ if (VLOG_IS_DBG_ENABLED()) {
+ char *s = ofp_to_string((*msgp)->data, (*msgp)->size, 1);
+ VLOG_DBG_RL(&rl, "%s: received: %s", vconn->name, s);
+ free(s);
+ }
+
+ oh = ofpbuf_at_assert(*msgp, 0, sizeof *oh);
+ if (oh->version != OFP_VERSION) {
+ VLOG_ERR_RL(&rl, "%s: received OpenFlow version %02"PRIx8" "
+ "!= expected %02x",
+ vconn->name, oh->version, OFP_VERSION);
+ ofpbuf_delete(*msgp);
+ *msgp = NULL;
+ return EPROTO;
+ }
}
}
if (retval) {
* vconn_send will not block. If 'msg' cannot be immediately accepted for
* transmission, it returns EAGAIN immediately. */
int
-vconn_send(struct vconn *vconn, struct buffer *msg)
+vconn_send(struct vconn *vconn, struct ofpbuf *msg)
{
int retval = vconn_connect(vconn);
if (!retval) {
+ assert(msg->size >= sizeof(struct ofp_header));
+ assert(((struct ofp_header *) msg->data)->length == htons(msg->size));
if (!VLOG_IS_DBG_ENABLED()) {
retval = (vconn->class->send)(vconn, msg);
} else {
char *s = ofp_to_string(msg->data, msg->size, 1);
retval = (vconn->class->send)(vconn, msg);
if (retval != EAGAIN) {
- VLOG_DBG("sent (%s): %s", strerror(retval), s);
+ VLOG_DBG_RL(&rl, "%s: sent (%s): %s", vconn->name, strerror(retval), s);
}
free(s);
}
/* Same as vconn_send, except that it waits until 'msg' can be transmitted. */
int
-vconn_send_block(struct vconn *vconn, struct buffer *msg)
+vconn_send_block(struct vconn *vconn, struct ofpbuf *msg)
{
int retval;
while ((retval = vconn_send(vconn, msg)) == EAGAIN) {
vconn_send_wait(vconn);
- VLOG_DBG("blocking on vconn send");
poll_block();
}
return retval;
/* Same as vconn_recv, except that it waits until a message is received. */
int
-vconn_recv_block(struct vconn *vconn, struct buffer **msgp)
+vconn_recv_block(struct vconn *vconn, struct ofpbuf **msgp)
{
int retval;
while ((retval = vconn_recv(vconn, msgp)) == EAGAIN) {
vconn_recv_wait(vconn);
- VLOG_DBG("blocking on vconn receive");
poll_block();
}
return retval;
}
+/* Sends 'request' to 'vconn' and blocks until it receives a reply with a
+ * matching transaction ID. Returns 0 if successful, in which case the reply
+ * is stored in '*replyp' for the caller to examine and free. Otherwise
+ * returns a positive errno value, or EOF, and sets '*replyp' to null.
+ *
+ * 'request' is always destroyed, regardless of the return value. */
+int
+vconn_transact(struct vconn *vconn, struct ofpbuf *request,
+ struct ofpbuf **replyp)
+{
+ uint32_t send_xid = ((struct ofp_header *) request->data)->xid;
+ int error;
+
+ *replyp = NULL;
+ error = vconn_send_block(vconn, request);
+ if (error) {
+ ofpbuf_delete(request);
+ return error;
+ }
+ for (;;) {
+ uint32_t recv_xid;
+ struct ofpbuf *reply;
+
+ error = vconn_recv_block(vconn, &reply);
+ if (error) {
+ return error;
+ }
+ recv_xid = ((struct ofp_header *) reply->data)->xid;
+ if (send_xid == recv_xid) {
+ *replyp = reply;
+ return 0;
+ }
+
+ VLOG_DBG_RL(&rl, "%s: received reply with xid %08"PRIx32" != expected "
+ "%08"PRIx32, vconn->name, recv_xid, send_xid);
+ ofpbuf_delete(reply);
+ }
+}
+
void
vconn_wait(struct vconn *vconn, enum vconn_wait_type wait)
{
* id. Stores the new buffer in '*bufferp'. The caller must free the buffer
* when it is no longer needed. */
void *
-make_openflow(size_t openflow_len, uint8_t type, struct buffer **bufferp)
+make_openflow(size_t openflow_len, uint8_t type, struct ofpbuf **bufferp)
{
return make_openflow_xid(openflow_len, type, random_uint32(), bufferp);
}
* buffer when it is no longer needed. */
void *
make_openflow_xid(size_t openflow_len, uint8_t type, uint32_t xid,
- struct buffer **bufferp)
+ struct ofpbuf **bufferp)
{
- struct buffer *buffer;
+ struct ofpbuf *buffer;
struct ofp_header *oh;
assert(openflow_len >= sizeof *oh);
assert(openflow_len <= UINT16_MAX);
- buffer = *bufferp = buffer_new(openflow_len);
- oh = buffer_put_uninit(buffer, openflow_len);
+ buffer = *bufferp = ofpbuf_new(openflow_len);
+ oh = ofpbuf_put_uninit(buffer, openflow_len);
memset(oh, 0, openflow_len);
oh->version = OFP_VERSION;
oh->type = type;
/* Updates the 'length' field of the OpenFlow message in 'buffer' to
* 'buffer->size'. */
void
-update_openflow_length(struct buffer *buffer)
+update_openflow_length(struct ofpbuf *buffer)
{
- struct ofp_header *oh = buffer_at_assert(buffer, 0, sizeof *oh);
+ struct ofp_header *oh = ofpbuf_at_assert(buffer, 0, sizeof *oh);
oh->length = htons(buffer->size);
}
-struct buffer *
-make_add_simple_flow(const struct flow *flow,
- uint32_t buffer_id, uint16_t out_port, uint16_t max_idle)
+struct ofpbuf *
+make_add_flow(const struct flow *flow, uint32_t buffer_id,
+ uint16_t idle_timeout, size_t n_actions)
{
struct ofp_flow_mod *ofm;
- size_t size = sizeof *ofm + sizeof ofm->actions[0];
- struct buffer *out = buffer_new(size);
- ofm = buffer_put_uninit(out, size);
+ size_t size = sizeof *ofm + n_actions * sizeof ofm->actions[0];
+ struct ofpbuf *out = ofpbuf_new(size);
+ ofm = ofpbuf_put_uninit(out, size);
memset(ofm, 0, size);
ofm->header.version = OFP_VERSION;
ofm->header.type = OFPT_FLOW_MOD;
ofm->header.length = htons(size);
- ofm->match.wildcards = htons(0);
+ ofm->match.wildcards = htonl(0);
ofm->match.in_port = flow->in_port;
memcpy(ofm->match.dl_src, flow->dl_src, sizeof ofm->match.dl_src);
memcpy(ofm->match.dl_dst, flow->dl_dst, sizeof ofm->match.dl_dst);
ofm->match.tp_src = flow->tp_src;
ofm->match.tp_dst = flow->tp_dst;
ofm->command = htons(OFPFC_ADD);
- ofm->max_idle = htons(max_idle);
+ ofm->idle_timeout = htons(idle_timeout);
+ ofm->hard_timeout = htons(OFP_FLOW_PERMANENT);
ofm->buffer_id = htonl(buffer_id);
+ return out;
+}
+
+struct ofpbuf *
+make_add_simple_flow(const struct flow *flow,
+ uint32_t buffer_id, uint16_t out_port,
+ uint16_t idle_timeout)
+{
+ struct ofpbuf *buffer = make_add_flow(flow, buffer_id, idle_timeout, 1);
+ struct ofp_flow_mod *ofm = buffer->data;
ofm->actions[0].type = htons(OFPAT_OUTPUT);
ofm->actions[0].arg.output.max_len = htons(0);
ofm->actions[0].arg.output.port = htons(out_port);
- return out;
+ return buffer;
}
-struct buffer *
-make_unbuffered_packet_out(const struct buffer *packet,
+struct ofpbuf *
+make_unbuffered_packet_out(const struct ofpbuf *packet,
uint16_t in_port, uint16_t out_port)
{
struct ofp_packet_out *opo;
- size_t size = sizeof *opo + packet->size;
- struct buffer *out = buffer_new(size);
- opo = buffer_put_uninit(out, size);
+ size_t size = sizeof *opo + sizeof opo->actions[0];
+ struct ofpbuf *out = ofpbuf_new(size + packet->size);
+ opo = ofpbuf_put_uninit(out, size);
memset(opo, 0, sizeof *opo);
opo->header.version = OFP_VERSION;
opo->header.type = OFPT_PACKET_OUT;
- opo->header.length = htons(size);
opo->buffer_id = htonl(UINT32_MAX);
opo->in_port = htons(in_port);
- opo->out_port = htons(out_port);
- memcpy(opo->u.data, packet->data, packet->size);
+ opo->n_actions = htons(1);
+ opo->actions[0].type = htons(OFPAT_OUTPUT);
+ opo->actions[0].arg.output.max_len = htons(0);
+ opo->actions[0].arg.output.port = htons(out_port);
+ ofpbuf_put(out, packet->data, packet->size);
+ update_openflow_length(out);
return out;
}
-struct buffer *
+struct ofpbuf *
make_buffered_packet_out(uint32_t buffer_id,
uint16_t in_port, uint16_t out_port)
{
struct ofp_packet_out *opo;
- size_t size = sizeof *opo + sizeof opo->u.actions[0];
- struct buffer *out = buffer_new(size);
- opo = buffer_put_uninit(out, size);
+ size_t size = sizeof *opo + sizeof opo->actions[0];
+ struct ofpbuf *out = ofpbuf_new(size);
+ opo = ofpbuf_put_uninit(out, size);
memset(opo, 0, size);
opo->header.version = OFP_VERSION;
opo->header.type = OFPT_PACKET_OUT;
opo->header.length = htons(size);
opo->buffer_id = htonl(buffer_id);
opo->in_port = htons(in_port);
- opo->out_port = htons(out_port);
- opo->u.actions[0].type = htons(OFPAT_OUTPUT);
- opo->u.actions[0].arg.output.max_len = htons(0);
- opo->u.actions[0].arg.output.port = htons(out_port);
+ opo->n_actions = htons(1);
+ opo->actions[0].type = htons(OFPAT_OUTPUT);
+ opo->actions[0].arg.output.max_len = htons(0);
+ opo->actions[0].arg.output.port = htons(out_port);
return out;
}
/* Creates and returns an OFPT_ECHO_REQUEST message with an empty payload. */
-struct buffer *
+struct ofpbuf *
make_echo_request(void)
{
struct ofp_header *rq;
- struct buffer *out = buffer_new(sizeof *rq);
- rq = buffer_put_uninit(out, sizeof *rq);
+ struct ofpbuf *out = ofpbuf_new(sizeof *rq);
+ rq = ofpbuf_put_uninit(out, sizeof *rq);
rq->version = OFP_VERSION;
rq->type = OFPT_ECHO_REQUEST;
rq->length = htons(sizeof *rq);
/* Creates and returns an OFPT_ECHO_REPLY message matching the
* OFPT_ECHO_REQUEST message in 'rq'. */
-struct buffer *
+struct ofpbuf *
make_echo_reply(const struct ofp_header *rq)
{
size_t size = ntohs(rq->length);
- struct buffer *out = buffer_new(size);
- struct ofp_header *reply = buffer_put(out, rq, size);
+ struct ofpbuf *out = ofpbuf_new(size);
+ struct ofp_header *reply = ofpbuf_put(out, rq, size);
reply->type = OFPT_ECHO_REPLY;
return out;
}
+
+void
+vconn_init(struct vconn *vconn, struct vconn_class *class, int connect_status,
+ uint32_t ip, const char *name)
+{
+ vconn->class = class;
+ vconn->connect_status = connect_status;
+ vconn->ip = ip;
+ vconn->name = xstrdup(name);
+}
+
git://git.onelab.eu / sliver-openvswitch.git / blobdiff