* Every port on a switch must have a corresponding netdev that must minimally
* support a few operations, such as the ability to read the netdev's MTU.
* The PORTING file at the top of the source tree has more information in the
- * "Writing a netdev Provider" section. */
+ * "Writing a netdev Provider" section.
+ *
+ * Thread-safety
+ * =============
+ *
+ * Most of the netdev functions are fully thread-safe: they may be called from
+ * any number of threads on the same or different netdev objects. The
+ * exceptions are:
+ *
+ * netdev_rx_recv()
+ * netdev_rx_wait()
+ * netdev_rx_drain()
+ *
+ * These functions are conditionally thread-safe: they may be called from
+ * different threads only on different netdev_rx objects. (The client may
+ * create multiple netdev_rx objects for a single netdev and access each
+ * of those from a different thread.)
+ *
+ * NETDEV_FOR_EACH_QUEUE
+ * netdev_queue_dump_next()
+ * netdev_queue_dump_done()
+ *
+ * These functions are conditionally thread-safe: they may be called from
+ * different threads only on different netdev_queue_dump objects. (The
+ * client may create multiple netdev_queue_dump objects for a single
+ * netdev and access each of those from a different thread.)
+ */
struct netdev;
struct netdev_class;
void netdev_wait(void);
void netdev_enumerate_types(struct sset *types);
+bool netdev_is_reserved_name(const char *name);
/* Open and close. */
int netdev_open(const char *name, const char *type, struct netdev **);
+struct netdev *netdev_ref(const struct netdev *);
void netdev_close(struct netdev *);
void netdev_parse_name(const char *netdev_name, char **name, char **type);
uint64_t tx_bytes;
uint64_t tx_packets;
uint64_t tx_errors;
+
+ /* Time at which the queue was created, in msecs, LLONG_MIN if unknown. */
+ long long int created;
};
int netdev_set_policing(struct netdev *, uint32_t kbits_rate,
int netdev_get_queue_stats(const struct netdev *, unsigned int queue_id,
struct netdev_queue_stats *);
-typedef void netdev_dump_queues_cb(unsigned int queue_id,
- const struct smap *details, void *aux);
-int netdev_dump_queues(const struct netdev *,
- netdev_dump_queues_cb *, void *aux);
+struct netdev_queue_dump {
+ struct netdev *netdev;
+ int error;
+ void *state;
+};
+void netdev_queue_dump_start(struct netdev_queue_dump *,
+ const struct netdev *);
+bool netdev_queue_dump_next(struct netdev_queue_dump *,
+ unsigned int *queue_id, struct smap *details);
+int netdev_queue_dump_done(struct netdev_queue_dump *);
+
+/* Iterates through each queue in NETDEV, using DUMP as state. Fills QUEUE_ID
+ * and DETAILS with information about queues. The client must initialize and
+ * destroy DETAILS.
+ *
+ * Arguments all have pointer type.
+ *
+ * If you break out of the loop, then you need to free the dump structure by
+ * hand using netdev_queue_dump_done(). */
+#define NETDEV_QUEUE_FOR_EACH(QUEUE_ID, DETAILS, DUMP, NETDEV) \
+ for (netdev_queue_dump_start(DUMP, NETDEV); \
+ (netdev_queue_dump_next(DUMP, QUEUE_ID, DETAILS) \
+ ? true \
+ : (netdev_queue_dump_done(DUMP), false)); \
+ )
typedef void netdev_dump_queue_stats_cb(unsigned int queue_id,
struct netdev_queue_stats *,