Implement OpenFlow 1.3 queue stats duration feature.

[sliver-openvswitch.git] / lib / netdev.h

diff --git a/lib/netdev.h b/lib/netdev.h
index a691d70..eb1870b 100644 (file)
--- a/lib/netdev.h
+++ b/lib/netdev.h
@@ -26,24 +26,23 @@
 extern "C" {
 #endif
 
-/* Generic interface to network devices.
+/* Generic interface to network devices ("netdev"s).
  *
- * Currently, there is a single implementation of this interface that supports
- * Linux.  The interface should be generic enough to be implementable on other
- * operating systems as well. */
+ * 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. */
 
+struct netdev;
+struct netdev_class;
+struct netdev_rx;
+struct netdev_saved_flags;
 struct ofpbuf;
 struct in_addr;
 struct in6_addr;
 struct smap;
 struct sset;
 
-enum netdev_flags {
-    NETDEV_UP = 0x0001,         /* Device enabled? */
-    NETDEV_PROMISC = 0x0002,    /* Promiscuous mode? */
-    NETDEV_LOOPBACK = 0x0004    /* This is a loopback device. */
-};
-
 /* Network device statistics.
  *
  * Values of unsupported statistics are set to all-1-bits (UINT64_MAX). */
@@ -87,6 +86,8 @@ struct netdev_tunnel_config {
 
     ovs_be16 dst_port;
 
+    bool ip_src_flow;
+    bool ip_dst_flow;
     ovs_be32 ip_src;
     ovs_be32 ip_dst;
 
@@ -101,21 +102,17 @@ struct netdev_tunnel_config {
     bool dont_fragment;
 };
 
-struct netdev;
-struct netdev_class;
-
 void netdev_run(void);
 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 *);
 
-bool netdev_exists(const char *name);
-bool netdev_is_open(const char *name);
-
 void netdev_parse_name(const char *netdev_name, char **name, char **type);
 
 /* Options. */
@@ -132,12 +129,17 @@ int netdev_get_mtu(const struct netdev *, int *mtup);
 int netdev_set_mtu(const struct netdev *, int mtu);
 int netdev_get_ifindex(const struct netdev *);
 
-/* Packet send and receive. */
-int netdev_listen(struct netdev *);
-int netdev_recv(struct netdev *, struct ofpbuf *);
-void netdev_recv_wait(struct netdev *);
-int netdev_drain(struct netdev *);
+/* Packet reception. */
+int netdev_rx_open(struct netdev *, struct netdev_rx **);
+void netdev_rx_close(struct netdev_rx *);
+
+const char *netdev_rx_get_name(const struct netdev_rx *);
 
+int netdev_rx_recv(struct netdev_rx *, struct ofpbuf *);
+void netdev_rx_wait(struct netdev_rx *);
+int netdev_rx_drain(struct netdev_rx *);
+
+/* Packet transmission. */
 int netdev_send(struct netdev *, const struct ofpbuf *);
 void netdev_send_wait(struct netdev *);
 
@@ -180,6 +182,23 @@ uint64_t netdev_features_to_bps(enum netdev_features features,
 bool netdev_features_is_full_duplex(enum netdev_features features);
 int netdev_set_advertisements(struct netdev *, enum netdev_features advertise);
 
+/* Flags. */
+enum netdev_flags {
+    NETDEV_UP = 0x0001,         /* Device enabled? */
+    NETDEV_PROMISC = 0x0002,    /* Promiscuous mode? */
+    NETDEV_LOOPBACK = 0x0004    /* This is a loopback device. */
+};
+
+int netdev_get_flags(const struct netdev *, enum netdev_flags *);
+int netdev_set_flags(struct netdev *, enum netdev_flags,
+                     struct netdev_saved_flags **);
+int netdev_turn_flags_on(struct netdev *, enum netdev_flags,
+                         struct netdev_saved_flags **);
+int netdev_turn_flags_off(struct netdev *, enum netdev_flags,
+                          struct netdev_saved_flags **);
+
+void netdev_restore_flags(struct netdev_saved_flags *);
+
 /* TCP/IP stack interface. */
 int netdev_get_in4(const struct netdev *, struct in_addr *address,
                    struct in_addr *netmask);
@@ -192,10 +211,6 @@ int netdev_get_next_hop(const struct netdev *, const struct in_addr *host,
 int netdev_get_status(const struct netdev *, struct smap *);
 int netdev_arp_lookup(const struct netdev *, ovs_be32 ip, uint8_t mac[6]);
 
-int netdev_get_flags(const struct netdev *, enum netdev_flags *);
-int netdev_set_flags(struct netdev *, enum netdev_flags, bool permanent);
-int netdev_turn_flags_on(struct netdev *, enum netdev_flags, bool permanent);
-int netdev_turn_flags_off(struct netdev *, enum netdev_flags, bool permanent);
 struct netdev *netdev_find_dev_by_in4(const struct in_addr *);
 
 /* Statistics. */
@@ -212,6 +227,9 @@ struct netdev_queue_stats {
     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,