#define VCONN_H 1
#include <stdbool.h>
+#include <stddef.h>
#include <stdint.h>
struct buffer;
struct flow;
struct pollfd;
+struct ofp_header;
+struct vconn;
-/* Client interface. */
-
-/* Virtual connection to an OpenFlow device. */
-struct vconn {
- struct vconn_class *class;
- int connect_status;
-};
+/* Client interface to vconns, which provide a virtual connection to an
+ * OpenFlow device. */
+void vconn_usage(bool active, bool passive);
int vconn_open(const char *name, struct vconn **);
void vconn_close(struct vconn *);
+const char *vconn_get_name(const struct vconn *);
bool vconn_is_passive(const struct vconn *);
+uint32_t vconn_get_ip(const struct vconn *);
int vconn_connect(struct vconn *);
int vconn_accept(struct vconn *, struct vconn **);
int vconn_recv(struct vconn *, struct buffer **);
int vconn_send(struct vconn *, struct buffer *);
+int vconn_transact(struct vconn *, struct buffer *, struct buffer **);
int vconn_open_block(const char *name, struct vconn **);
int vconn_send_block(struct vconn *, struct buffer *);
+int vconn_recv_block(struct vconn *, struct buffer **);
enum vconn_wait_type {
WAIT_CONNECT,
void vconn_recv_wait(struct vconn *);
void vconn_send_wait(struct vconn *);
+void *make_openflow(size_t openflow_len, uint8_t type, struct buffer **);
+void *make_openflow_xid(size_t openflow_len, uint8_t type,
+ uint32_t xid, struct buffer **);
+void update_openflow_length(struct buffer *);
+struct buffer *make_add_flow(const struct flow *, uint32_t buffer_id,
+ uint16_t max_idle, size_t n_actions);
struct buffer *make_add_simple_flow(const struct flow *,
- uint32_t buffer_id, uint16_t out_port);
+ uint32_t buffer_id, uint16_t out_port,
+ uint16_t max_idle);
struct buffer *make_buffered_packet_out(uint32_t buffer_id,
uint16_t in_port, uint16_t out_port);
struct buffer *make_unbuffered_packet_out(const struct buffer *packet,
uint16_t in_port, uint16_t out_port);
-\f
-/* Provider interface. */
-
-struct vconn_class {
- /* Prefix for connection names, e.g. "nl", "tcp". */
- const char *name;
-
- /* Attempts to connect to an OpenFlow device. 'name' is the full
- * connection name provided by the user, e.g. "nl:0", "tcp:1.2.3.4". This
- * name is useful for error messages but must not be modified.
- *
- * 'suffix' is a copy of 'name' following the colon and may be modified.
- *
- * Returns 0 if successful, otherwise a positive errno value. If
- * successful, stores a pointer to the new connection in '*vconnp'.
- *
- * The open function must not block waiting for a connection to complete.
- * If the connection cannot be completed immediately, it should return
- * EAGAIN (not EINPROGRESS, as returned by the connect system call) and
- * continue the connection in the background. */
- int (*open)(const char *name, char *suffix, struct vconn **vconnp);
-
- /* Closes 'vconn' and frees associated memory. */
- void (*close)(struct vconn *vconn);
-
- /* Tries to complete the connection on 'vconn', which must be an active
- * vconn. If 'vconn''s connection is complete, returns 0 if the connection
- * was successful or a positive errno value if it failed. If the
- * connection is still in progress, returns EAGAIN.
- *
- * The connect function must not block waiting for the connection to
- * complete; instead, it should return EAGAIN immediately. */
- int (*connect)(struct vconn *vconn);
-
- /* Tries to accept a new connection on 'vconn', which must be a passive
- * vconn. If successful, stores the new connection in '*new_vconnp' and
- * returns 0. Otherwise, returns a positive errno value.
- *
- * The accept function must not block waiting for a connection. If no
- * connection is ready to be accepted, it should return EAGAIN.
- *
- * Nonnull iff this is a passive vconn (one that accepts connections and
- * does not transfer data). */
- int (*accept)(struct vconn *vconn, struct vconn **new_vconnp);
-
- /* 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 null pointer into '*msgp'.
- *
- * If the connection has been closed in the normal fashion, returns EOF.
- *
- * The recv function must not block waiting for a packet to arrive. If no
- * packets have been received, it should return EAGAIN.
- *
- * Nonnull iff this is an active vconn (one that transfers data and does
- * not accept connections). */
- int (*recv)(struct vconn *vconn, struct buffer **msgp);
-
- /* Tries to queue 'msg' for transmission on 'vconn', which must be an
- * active vconn. If successful, returns 0, in which case ownership of
- * 'msg' is transferred to the vconn. Success does not guarantee that
- * 'msg' has been or ever will be delivered to the peer, only that it has
- * been queued for transmission.
- *
- * Returns a positive errno value on failure, in which case the caller
- * retains ownership of 'msg'.
- *
- * The send function must not block. If 'msg' cannot be immediately
- * accepted for transmission, it should return EAGAIN.
- *
- * Nonnull iff this is an active vconn (one that transfers data and does
- * not accept connections). */
- int (*send)(struct vconn *vconn, struct buffer *msg);
-
- void (*wait)(struct vconn *vconn, enum vconn_wait_type);
-};
+struct buffer *make_echo_request(void);
+struct buffer *make_echo_reply(const struct ofp_header *rq);
extern struct vconn_class tcp_vconn_class;
extern struct vconn_class ptcp_vconn_class;
+extern struct vconn_class unix_vconn_class;
+extern struct vconn_class punix_vconn_class;
#ifdef HAVE_OPENSSL
extern struct vconn_class ssl_vconn_class;
extern struct vconn_class pssl_vconn_class;
git://git.onelab.eu / sliver-openvswitch.git / blobdiff